:root {
  --bg: #f6f6f4;
  --paper: #fff;
  --ink: #1b1b1b;
  --muted: #5a5a5a;
  --line: #dcdcd6;
  --navy: #14325c;
  --navy-2: #0f2747;
  --focus: #14325c;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Noto Sans Oriya", "Nirmala UI", "Kalinga", "Segoe UI", system-ui, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
  font-size: 16px;
}
a { color: var(--navy); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }

.wrap { width: min(1080px, calc(100% - 32px)); margin: 0 auto; }

.top {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}
.top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 64px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 700;
  letter-spacing: 0.02em;
}
.brand img { width: 40px; height: 40px; object-fit: contain; }
.nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  font-size: 14px;
}
.nav a { color: var(--muted); }
.nav a.active, .nav a:hover { color: var(--ink); text-decoration: none; }
.lang {
  display: flex;
  border: 1px solid var(--line);
  overflow: hidden;
}
.lang a {
  padding: 4px 10px;
  color: var(--muted);
  font-size: 13px;
}
.lang a.on { background: var(--navy); color: #fff; text-decoration: none; }
.btn {
  display: inline-block;
  border: 1px solid var(--navy);
  background: var(--navy);
  color: #fff;
  padding: 10px 16px;
  font-size: 14px;
}
.btn:hover { background: var(--navy-2); text-decoration: none; color: #fff; }
.btn.ghost {
  background: transparent;
  color: var(--navy);
}
.btn.ghost:hover { background: var(--navy); color: #fff; }

.hero {
  padding: 56px 0 40px;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 32px;
  align-items: center;
}
.hero h1 {
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.2;
  margin: 0 0 12px;
  font-weight: 700;
}
.hero p { margin: 0 0 20px; color: var(--muted); max-width: 52ch; }
.hero-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.hero-logo {
  width: 220px;
  margin-left: auto;
  object-fit: contain;
}

.section { padding: 40px 0; }
.section h2 { margin: 0 0 8px; font-size: 22px; }
.lead { color: var(--muted); margin: 0 0 24px; }
.grid-4, .grid-3, .grid-2 {
  display: grid;
  gap: 14px;
}
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.card {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 16px;
}
.card h3 { margin: 0 0 6px; font-size: 16px; }
.card p { margin: 0; color: var(--muted); font-size: 14px; }
.num {
  display: inline-block;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 8px;
}

.page-head {
  padding: 36px 0 8px;
}
.page-head h1 { margin: 0 0 8px; font-size: 28px; }
.prose { max-width: 70ch; }
.prose p { color: var(--muted); }

form.stack { display: grid; gap: 12px; max-width: 520px; }
label { font-size: 13px; color: var(--muted); display: block; margin-bottom: 4px; }
input, textarea, select {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 10px 12px;
  font: inherit;
  color: var(--ink);
}
textarea { min-height: 140px; resize: vertical; }
.alert {
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 10px 12px;
  margin-bottom: 14px;
  font-size: 14px;
}
.alert.ok { border-color: #b7c9b7; }
.alert.err { border-color: #d7b4b4; }

.foot {
  border-top: 1px solid var(--line);
  padding: 24px 0 32px;
  color: var(--muted);
  font-size: 13px;
  margin-top: 24px;
  background: var(--paper);
}
.foot-grid {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.foot a { color: var(--muted); }

.menu-btn {
  display: none;
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 6px 10px;
  font: inherit;
}

@media (max-width: 900px) {
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-logo { margin: 0; width: 160px; }
}
@media (max-width: 720px) {
  .menu-btn { display: inline-block; }
  .nav {
    display: none;
    position: absolute;
    left: 16px;
    right: 16px;
    top: 64px;
    background: var(--paper);
    border: 1px solid var(--line);
    padding: 12px;
    flex-direction: column;
    align-items: flex-start;
    z-index: 20;
  }
  .nav.open { display: flex; }
  .top { position: relative; }
  .grid-4, .grid-2 { grid-template-columns: 1fr; }
}