/* ===================================
   index.html 固有スタイル
   =================================== */

.nav{ display:flex; gap:14px; align-items:center; flex-wrap:wrap; justify-content:flex-end; }
.nav a{
  color: var(--muted);
  font-size: 13.5px;
  padding: 8px 10px;
  border-radius: 999px;
  border:1px solid transparent;
}
.nav a:hover{
  color: var(--text);
  text-decoration:none;
  border-color: rgba(255,255,255,.10);
  background: rgba(255,255,255,.04);
}

.hero{ padding: 42px 0 18px; }
.hero-card{
  border:1px solid rgba(255,255,255,.08);
  background: linear-gradient(180deg, rgba(27,20,16,.74), rgba(22,16,12,.62));
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow:hidden;
  position:relative;
}
.hero-card::before{
  content:"";
  position:absolute; inset:-2px;
  background:
    radial-gradient(900px 420px at 18% 18%, rgba(214,160,106,.22), transparent 58%),
    radial-gradient(900px 450px at 88% 30%, rgba(126,225,196,.14), transparent 62%);
  opacity:.85;
  pointer-events:none;
  filter: blur(10px);
}
.hero-inner{ position:relative; padding: 22px 22px 18px; display:grid; gap:10px; }
.hero-kicker{
  display:flex; align-items:center; gap:10px;
  color: var(--muted); font-size: 13px; letter-spacing:.08em;
}
.dot{
  width:8px; height:8px; border-radius:50%;
  background: var(--accent);
  box-shadow: 0 0 18px rgba(126,225,196,.38);
  animation: pulse 2.8s ease-in-out infinite;
}
@keyframes pulse{
  0%,100%{ transform: scale(1); opacity:.75; }
  50%{ transform: scale(1.45); opacity:1; }
}
.hero-desc{
  margin:0;
  color: rgba(239,231,223,.94);
  font-size: 14.5px;
  line-height:1.85;
  max-width: 76ch;
}

section{ padding: 22px 0; }
.section-title{
  display:flex; align-items:baseline; justify-content:space-between;
  gap:14px; margin:0 0 14px;
}
.section-title h2{ margin:0; font-size:16px; letter-spacing:.08em; color: rgba(239,231,223,.92); }
.section-title .hint{ margin:0; font-size:12.5px; color: var(--muted); }

.grid{ display:grid; grid-template-columns: repeat(12, 1fr); gap:14px; }
.col{
  grid-column: span 6;
  border:1px solid rgba(255,255,255,.08);
  background: linear-gradient(180deg, var(--card), var(--card2));
  border-radius: var(--radius);
  box-shadow: 0 12px 40px rgba(0,0,0,.38);
  overflow:hidden;
  transform: translateY(6px);
  opacity:0;
  transition: transform .6s ease, opacity .6s ease, border-color .25s ease;
  cursor: pointer;
}
.col-link{
  display:block;
  height:100%;
  color:inherit;
  text-decoration:none;
}
.col-link:hover{
  text-decoration:none;
}
.col-link:focus-visible{
  outline:2px solid rgba(126,225,196,.6);
  outline-offset:3px;
  border-radius: var(--radius);
}
.col:focus-within{
  border-color: rgba(126,225,196,.55);
  box-shadow: 0 0 0 2px rgba(126,225,196,.18), 0 12px 40px rgba(0,0,0,.38);
}
.col.is-updating,
.col.is-updating .col-link{
  cursor: not-allowed;
}
.col.is-updating{ opacity:.6; }
.col.is-visible{ transform: translateY(0); opacity:1; }
.col:hover{ border-color: rgba(214,160,106,.25); }
.col-inner{
  padding: 18px 18px 16px;
  display:flex; flex-direction:column; gap:10px;
  min-height:118px;
}
.badge{
  display:inline-flex; align-items:center; gap:8px;
  width: fit-content;
  padding: 6px 10px;
  border-radius: 999px;
  border:1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.04);
  color: rgba(239,231,223,.90);
  font-size: 12px;
  letter-spacing:.06em;
}
.badge i{
  width:8px; height:8px; border-radius:50%;
  background: linear-gradient(180deg, var(--accent2), var(--accent));
  box-shadow: 0 0 16px rgba(214,160,106,.25);
  display:inline-block;
}
.col h3{ margin:0; font-size:15.5px; letter-spacing:.04em; }
.col p{ margin:0; color: var(--muted); font-size:13.5px; line-height:1.75; }
.col .meta{
  margin-top:auto;
  display:flex; align-items:center; justify-content:space-between;
  gap:10px;
  padding-top: 12px;
  border-top:1px solid rgba(255,255,255,.06);
  color: rgba(197,181,168,.95);
  font-size: 12px;
}
.pill{
  padding: 6px 10px;
  border-radius: 999px;
  border:1px solid rgba(255,255,255,.10);
  background: rgba(0,0,0,.18);
}

.form{
  border:1px solid rgba(255,255,255,.08);
  background: linear-gradient(180deg, rgba(27,20,16,.66), rgba(22,16,12,.60));
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  position:relative;
}
.form::before{
  content:"";
  position:absolute; inset:-2px;
  background:
    radial-gradient(900px 420px at 18% 18%, rgba(214,160,106,.18), transparent 58%),
    radial-gradient(900px 450px at 88% 30%, rgba(126,225,196,.12), transparent 62%);
  opacity:.85;
  pointer-events:none;
  filter: blur(10px);
  border-radius: var(--radius);
}

.form-grid{
  position:relative;
  display:grid; grid-template-columns: repeat(12, 1fr); gap:14px;
  margin-bottom:18px;
}
.field{
  grid-column: span 6;
  display:flex; flex-direction:column; gap:6px;
}
.field.full{ grid-column: span 12; }
.field label{
  color: rgba(239,231,223,.90);
  font-size: 13px;
  letter-spacing: .04em;
}
.field input,
.field textarea{
  padding: 11px 13px;
  border:1px solid rgba(255,255,255,.10);
  border-radius: 8px;
  background: rgba(0,0,0,.25);
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
  transition: border-color .2s ease, background .2s ease;
}
.field input:focus,
.field textarea:focus{
  outline:none;
  border-color: rgba(126,225,196,.35);
  background: rgba(0,0,0,.35);
}
.field textarea{
  resize: vertical;
  min-height: 120px;
  line-height: 1.6;
}

.actions{
  position:relative;
  display:flex; flex-direction:column; gap:10px; align-items:flex-start;
}
.btn{
  padding: 12px 24px;
  border:1px solid rgba(126,225,196,.35);
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(126,225,196,.12), rgba(126,225,196,.08));
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .04em;
  cursor: pointer;
  transition: all .2s ease;
}
.btn:hover:not(:disabled){
  border-color: rgba(126,225,196,.55);
  background: linear-gradient(180deg, rgba(126,225,196,.22), rgba(126,225,196,.15));
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(126,225,196,.18);
}
.btn:disabled{
  opacity:.5;
  cursor: not-allowed;
}
.note{
  margin:0;
  color: var(--muted);
  font-size: 12px;
}
.toast{
  margin-top:12px;
  padding: 12px 16px;
  border-radius: 8px;
  border:1px solid rgba(255,255,255,.10);
  background: rgba(0,0,0,.20);
  color: rgba(239,231,223,.92);
  font-size: 13px;
  display:none;
}
.toast.show{ display:block; }

/* honeypot (bot対策) */
.hp{ position:absolute; left:-9999px; top:auto; width:1px; height:1px; overflow:hidden; }

@media (max-width: 820px){
  .col{ grid-column: span 12; }
  .field{ grid-column: span 12; }
  .nav{ display:none; }
}



.brand{
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-logo{
  height: 70px;   /* 好みで 24〜36px くらい */
  width: auto;
  display: block;
}


#columns, #contact { scroll-margin-top: 90px; }


.x-button {
  display: inline-flex;
  align-items: center;
  background-color: #000; /* Xのブランドカラー */
  color: #fff;
  padding: 10px 20px;
  border-radius: 25px;
  text-decoration: none;
  font-weight: bold;
  transition: opacity 0.3s;
}

.x-button i {
  font-size: 1.2rem;
  margin-right: 8px;
}

.x-button:hover {
  opacity: 0.8;
}