:root {
  --blue: #2062a8;
  --blue-dark: #174b83;
  --blue-light: #4595cc;
  --ink: #443f3f;
  --text: #333333;
  --muted: #6b6b6b;
  --bg: #ffffff;
  --bg-soft: #f4f6f9;
  --border: #e2e6ec;
  --ok-bg: #eef7ee;
  --ok-border: #6cae6c;
  --ok-text: #2c6e2c;
  --err-bg: #fdeeee;
  --err-border: #d98080;
  --err-text: #a33030;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}
a { color: var(--blue); }
.wrap { max-width: 1060px; margin: 0 auto; padding: 0 24px; }

.topbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 18px 0;
}
.topbar-outer { border-bottom: 1px solid var(--border); background: #fff; }
.logos { display: flex; align-items: center; gap: 14px; }
.logos img { display: block; }
.logo-ntt { height: 26px; width: auto; }
.logo-acer { height: 20px; width: auto; }
.logo-sep { color: #b9c2cd; font-size: 18px; }
.topbar nav a { color: var(--muted); text-decoration: none; margin-left: 24px; font-size: 14.5px; font-weight: 600; }
.topbar nav a:hover { color: var(--blue); }

.hero { padding: 72px 0 60px; }
.hero h1 { font-size: clamp(34px, 6vw, 56px); line-height: 1.1; font-weight: 800; color: var(--ink); }
.hero h1 em { color: var(--blue); font-style: normal; }
.hero p.lead { margin-top: 18px; font-size: 18px; color: var(--muted); max-width: 680px; }
.hero p.period { margin-top: 14px; font-size: 14.5px; color: var(--muted); }
.cta {
  display: inline-block; margin-top: 34px; background: var(--blue); color: #fff;
  text-decoration: none; font-weight: 700; font-size: 16px;
  padding: 15px 34px; border-radius: 6px; border: none; cursor: pointer;
}
.cta:hover { background: var(--blue-dark); }

.checker {
  height: 12px;
  background:
    linear-gradient(45deg, #dfe5ec 25%, transparent 25%, transparent 75%, #dfe5ec 75%) 0 0 / 12px 12px,
    linear-gradient(45deg, #dfe5ec 25%, #fff 25%, #fff 75%, #dfe5ec 75%) 6px 6px / 12px 12px;
}
.stripe { height: 5px; background: linear-gradient(90deg, var(--blue), var(--blue-light)); }

section { padding: 60px 0; }
section.alt { background: var(--bg-soft); }
section h2 { font-size: 30px; margin-bottom: 26px; color: var(--ink); }
section h2 span { color: var(--blue); }
.grid { display: grid; gap: 18px; }
.grid.c4 { grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }
.card {
  background: #fff; border: 1px solid var(--border);
  border-radius: 10px; padding: 24px;
  box-shadow: 0 1px 3px rgba(20, 40, 70, .06);
}
.card h3 { font-size: 17px; margin-bottom: 8px; color: var(--ink); }
.card .big { font-size: 34px; font-weight: 800; color: var(--blue); }
.card p { color: var(--muted); font-size: 14.5px; }
.card.place { border-top: 4px solid var(--blue); }
ol.steps { counter-reset: s; list-style: none; display: grid; gap: 14px; }
ol.steps li {
  background: #fff; border: 1px solid var(--border); border-radius: 10px;
  padding: 18px 20px 18px 66px; position: relative; color: var(--muted);
  box-shadow: 0 1px 3px rgba(20, 40, 70, .06);
}
ol.steps li b { color: var(--ink); }
ol.steps li::before {
  counter-increment: s; content: counter(s);
  position: absolute; left: 18px; top: 50%; transform: translateY(-50%);
  width: 32px; height: 32px; border-radius: 50%; background: var(--blue);
  color: #fff; font-weight: 700; display: flex; align-items: center; justify-content: center;
}

.note { margin-top: 18px; color: var(--muted); font-size: 13.5px; }

.form-panel {
  background: #fff; border: 1px solid var(--border);
  border-radius: 12px; padding: 34px;
  box-shadow: 0 2px 10px rgba(20, 40, 70, .07);
}
.form-section {
  font-size: 13px; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase;
  color: var(--blue); margin: 26px 0 14px; padding-bottom: 6px; border-bottom: 1px solid var(--border);
}
.form-section:first-child { margin-top: 0; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-grid .full { grid-column: 1 / -1; }
label { display: block; font-size: 13.5px; color: var(--muted); margin-bottom: 6px; font-weight: 600; }
input[type=text], input[type=email], input[type=tel], input[type=date] {
  width: 100%; padding: 11px 14px; border-radius: 6px;
  border: 1px solid #c9d0da; background: #fff;
  color: var(--text); font-size: 15px;
}
input:focus { outline: 2px solid var(--blue-light); border-color: transparent; }
.hint { font-size: 12px; color: #98a0ab; font-weight: 400; }
.checks { margin-top: 24px; display: grid; gap: 12px; }
.checks label {
  display: flex; gap: 10px; align-items: flex-start;
  font-size: 13.5px; color: var(--muted); cursor: pointer; margin: 0; font-weight: 400;
}
.checks input { margin-top: 3px; accent-color: var(--blue); }
.form-msg { margin-top: 18px; padding: 14px 16px; border-radius: 6px; display: none; font-size: 14.5px; }
.form-msg.ok { display: block; background: var(--ok-bg); border: 1px solid var(--ok-border); color: var(--ok-text); }
.form-msg.err { display: block; background: var(--err-bg); border: 1px solid var(--err-border); color: var(--err-text); }
.hp { position: absolute; left: -9999px; opacity: 0; height: 0; overflow: hidden; }

footer {
  border-top: 1px solid var(--border); padding: 30px 0 40px;
  color: var(--muted); font-size: 13.5px; background: var(--bg-soft);
}
footer a { color: var(--blue); }

.doc { max-width: 760px; margin: 0 auto; padding: 60px 24px; }
.doc h1 { font-size: 30px; margin-bottom: 10px; color: var(--ink); }
.doc h2 { font-size: 20px; margin: 34px 0 12px; color: var(--ink); }
.doc p, .doc li { color: var(--muted); font-size: 15px; margin-bottom: 10px; }
.doc ul, .doc ol { padding-left: 22px; }
.doc .back { display: inline-block; margin-bottom: 30px; color: var(--muted); text-decoration: none; font-size: 14px; }
.doc .back:hover { color: var(--blue); }

@media (max-width: 680px) {
  .form-grid { grid-template-columns: 1fr; }
  .topbar nav { display: none; }
}