:root {
  color-scheme: light;
  --ink: #132425;
  --muted: #627272;
  --blue: #478ac9;
  --blue-dark: #245f97;
  --pale: #eef5f7;
  --line: #dce6e8;
  --white: #ffffff;
  font-family: "Open Sans", Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background: linear-gradient(145deg, #f5f8f8 0%, #eaf2f3 100%);
}

.site-header {
  min-height: 76px;
  padding: 16px max(24px, calc((100vw - 1120px) / 2));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background: var(--white);
  border-bottom: 1px solid var(--line);
}

.brand {
  color: var(--blue-dark);
  font: 700 1.25rem/1.2 Georgia, serif;
  letter-spacing: .08em;
  text-decoration: none;
}

nav { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
nav a, .logout-form button {
  color: var(--ink);
  font: 600 .9rem/1.2 "Open Sans", Arial, sans-serif;
  text-decoration: none;
}
nav a:hover { color: var(--blue-dark); }
.logout-form { margin: 0; }
.logout-form button {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 9px 14px;
  background: var(--white);
  cursor: pointer;
}

main { width: min(1120px, calc(100% - 32px)); margin: 0 auto; padding: 56px 0 70px; }

.login-card {
  width: min(500px, 100%);
  margin: 5vh auto;
  padding: clamp(28px, 6vw, 48px);
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255,255,255,.95);
  box-shadow: 0 22px 70px rgba(28, 57, 61, .10);
}

.shield, .system-icon {
  display: grid;
  place-items: center;
  color: var(--white);
  background: var(--blue);
  font-family: Georgia, serif;
  font-weight: 700;
}
.shield { width: 54px; height: 54px; border-radius: 18px; margin-bottom: 26px; font-size: 1.4rem; }
.eyebrow { margin: 0 0 10px; color: var(--blue-dark); font-size: .72rem; font-weight: 800; letter-spacing: .17em; }
h1, h2 { margin: 0; font-family: Georgia, serif; }
h1 { font-size: clamp(2.3rem, 6vw, 4rem); line-height: 1; }
h2 { font-size: 1.5rem; }
.intro, .hero > p:not(.eyebrow), .local-note { color: var(--muted); line-height: 1.6; }
.intro { margin: 18px 0 26px; }
.local-note { margin: 22px 0 0; font-size: .78rem; }

.login-form { display: grid; gap: 10px; }
.login-form label { margin-top: 5px; font-size: .82rem; font-weight: 700; }
.login-form input {
  width: 100%;
  padding: 14px 15px;
  border: 1px solid #cbd8da;
  border-radius: 12px;
  background: #fbfdfd;
  color: var(--ink);
  font: inherit;
}
.login-form input:focus { outline: 3px solid rgba(71,138,201,.18); border-color: var(--blue); }
.primary {
  margin-top: 12px;
  padding: 14px 18px;
  border: 0;
  border-radius: 12px;
  color: var(--white);
  background: var(--blue);
  font: 700 1rem/1.2 "Open Sans", Arial, sans-serif;
  cursor: pointer;
}
.primary:hover { background: var(--blue-dark); }
.notice { padding: 12px 14px; border-radius: 10px; font-size: .88rem; }
.notice.error { color: #812b2b; background: #fbe9e8; }
.notice.success { color: #1f6244; background: #e5f6ed; }

.hero { padding: 12px 0 42px; }
.hero > p:not(.eyebrow) { max-width: 620px; margin: 15px 0 0; font-size: 1.05rem; }
.system-group { margin-bottom: 38px; }
.system-group h2 { margin-bottom: 15px; }
.system-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.system-card {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  min-height: 86px;
  padding: 16px;
  color: var(--ink);
  background: rgba(255,255,255,.94);
  border: 1px solid var(--line);
  border-radius: 16px;
  text-decoration: none;
  transition: transform .16s ease, box-shadow .16s ease, border-color .16s ease;
}
.system-card:hover { transform: translateY(-2px); border-color: #b8cdd1; box-shadow: 0 12px 30px rgba(28,57,61,.09); }
.system-icon { width: 46px; height: 46px; border-radius: 14px; font-size: 1.1rem; }
.system-copy { display: grid; gap: 5px; }
.system-copy strong { font-family: Georgia, serif; font-size: 1.08rem; }
.system-copy small { color: var(--muted); font-size: .78rem; }
.arrow { color: var(--blue-dark); font-size: 1.1rem; }

footer { padding: 28px 20px; text-align: center; color: #dce4e5; background: #2e3536; font-size: .78rem; }

@media (max-width: 700px) {
  .site-header { align-items: flex-start; }
  nav { justify-content: flex-end; gap: 10px; }
  main { padding-top: 34px; }
  .system-grid { grid-template-columns: 1fr; }
}