:root{
  --max_width: 960px;
  --spacer: 24px;
  --accent: #1f8feb;
  --muted: #6b7280;
  --glass: rgba(255,255,255,0.06);
  --radius: 12px;
  --font_family: "Noto Sans JP", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
}

html,body{
  height:100%;
  margin:0;
  font-family:var(--font_family);

  /* 宇宙ブルー系（青黒）グラデーション */
  background:
    linear-gradient(180deg, #050a15 0%, #0b1c33 55%, #0a223d 100%),
    radial-gradient(700px 350px at 20% 30%, rgba(32,108,203,0.10), transparent 55%),
    radial-gradient(600px 320px at 85% 75%, rgba(66,153,225,0.06), transparent 60%);

  color:#eef2ff;
  background-attachment: fixed;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

.container{
  max-width:var(--max_width);
  margin:0 auto;
  padding:calc(var(--spacer) * 2) var(--spacer);
  box-sizing:border-box;
}

.card_default{
  display:flex;
  flex-direction:column;
  gap:18px;
  background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.02));
  border-radius:var(--radius);
  padding:32px;
  box-shadow: 0 10px 30px rgba(2,6,23,0.6);
  backdrop-filter: blur(6px);
  border:1px solid rgba(255,255,255,0.04);
}

.card_default:not(:first-child){
  margin-top: 24px;
}

.brand_row{
  display:flex;
  align-items:center;
  gap:16px;
}

.brand_logo{
  width:56px;
  height:56px;
  border-radius:10px;
  background:linear-gradient(135deg,var(--accent),#22c1c3);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-weight:700;
  font-size:18px;
  color:white;
  box-shadow: 0 4px 14px rgba(31,139,235,0.12);
  flex:0 0 56px;
}

.brand_name{
  font-size:20px;
  font-weight:700;
  letter-spacing:0.02em;
  color: #fff;
}

.lead_text{
  color:var(--muted);
  font-size:15px;
  line-height:1.6;
  margin-top:6px;
}

.hero{
  display:flex;
  gap:24px;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
}

.left_column{
  flex:1 1 420px;
}

.right_column{
  flex:0 0 280px;
  min-width:240px;
}

.title_big{
  font-size:30px;
  margin:0 0 6px 0;
  color:#fff;
}

.subtitle_small{
  color:var(--muted);
  font-size:14px;
  margin:0 0 18px 0;
}

.countdown_grid{
  display:flex;
  gap:10px;
  margin-bottom:18px;
  flex-wrap:wrap;
}

.countdown_item{
  min-width:62px;
  padding:10px 12px;
  background:rgba(255,255,255,0.02);
  border-radius:10px;
  text-align:center;
  border:1px solid rgba(255,255,255,0.02);
}

.countdown_value{
  font-weight:700;
  font-size:18px;
  display:block;
}

.countdown_label{
  font-size:11px;
  color:var(--muted);
  margin-top:4px;
}

.cta_button{
  display:inline-block;
  padding:10px 16px;
  border-radius:10px;
  background:var(--accent);
  color:white;
  text-decoration:none;
  font-weight:700;
  box-shadow: 0 6px 18px rgba(31,139,235,0.18);
}

.newsletter_form{
  display:flex;
  gap:8px;
  align-items:center;
  margin-top:6px;
}

.input_email{
  flex:1 1 auto;
  padding:10px 12px;
  border-radius:10px;
  border:1px solid rgba(255,255,255,0.06);
  background:transparent;
  color: #fff;
  outline:none;
  font-size:14px;
}

.input_email::placeholder{
  color: rgba(255,255,255,0.45);
}

.footer_note{
  font-size:13px;
  color:var(--muted);
}

@media (max-width:640px){
  .title_big{ font-size:22px; }
  .brand_name{ font-size:18px; }
  .right_column{ order:2; width:100%; }
}

.text_center{
  text-align:center;
}

.only_link_wrapper{
  margin:0;
  font-size:16px;
}

.footer_container{
  padding-bottom:calc(var(--spacer) * 1.5);
}

.footer_card{
  align-items:center;
  justify-content:space-between;
  gap:12px;
}