:root{
  --bg:#ffffff;           /* 白背景 */
  --ink:#222;             /* 文字色（深めグレー） */
  --muted:#6b7280;        /* サブテキスト */
  --brand:#3b7a57;        /* 深緑（ボタン） */
  --brand-2:#99b39b;      /* 淡いグリーン（アクセント） */
  --card:#ffffff;         /* カード背景：白 */
  --border:#e5e7eb;       /* 薄いグレーの境界 */
  --radius:16px;
  --maxw:1100px;
}

*{ box-sizing:border-box; }
html,body{ margin:0; padding:0; }
body{
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Hiragino Kaku Gothic ProN",
               "Noto Sans JP", "Yu Gothic UI", sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
}
a{ color:inherit; text-decoration:none; }
a:focus-visible, button:focus-visible { outline:2px solid var(--brand); outline-offset:2px; }
img{ max-width:100%; height:auto; display:block; }

.container{ width:100%; max-width:var(--maxw); margin:0 auto; padding:0 20px; }

/* Header */
.site-header{ border-bottom:1px solid var(--border); background:#fff; }
.header-inner{ display:flex; align-items:center; justify-content:space-between; gap:16px; padding:14px 0; }
.logo{ font-weight:700; letter-spacing:.02em; }
.logo b{ color:var(--brand); }
.main-nav ul{ display:flex; gap:18px; list-style:none; margin:0; padding:0; }
.main-nav a{ color:var(--muted); font-weight:600; }
.main-nav a:hover{ color:var(--brand); }

/* Hero */
.hero{ padding:64px 0 44px; }
.hero h1{ font-size: clamp(28px, 4vw, 44px); line-height:1.2; margin:0 0 8px; }
.lead{ color:var(--muted); max-width:72ch; margin:0 0 20px; }

/* Cards (3-up) */
.cards{ display:grid; grid-template-columns:1fr; gap:16px; margin-top:16px; }
@media (min-width: 720px){
  .cards{ grid-template-columns: repeat(3, 1fr); gap:18px; }
}
.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  overflow:hidden;
  display:flex;
  flex-direction:column;
}
.card-media{
  width:100%;
  aspect-ratio:16/9;              /* 画像は16:9で統一 */
  object-fit:cover;
  background:#f3f4f6;
}
.card-body{ padding:16px; display:flex; flex-direction:column; gap:10px; }
.tag{
  display:inline-block;
  font-size:12px;
  color:#0f5132;
  background:#d1e7dd;
  padding:4px 8px;
  border-radius:999px;
  font-weight:700;
}
.card h3{ margin:2px 0 0; font-size:18px; }
.card p{ margin:0; color:var(--muted); font-size:14px; }

.btn{
  align-self:flex-start;
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:10px 14px; border-radius:999px;
  background:var(--brand); color:#fff; border:1px solid var(--brand);
  font-weight:700; transition:transform .08s ease, filter .15s ease;
}
.btn:hover{ filter:brightness(1.05); }
.btn:active{ transform:translateY(1px); }

/* Sections */
.section{ padding:44px 0; border-top:1px solid var(--border); }
.section:first-of-type{ border-top:none; }
.section h2{ font-size: clamp(22px, 3vw, 28px); margin:0 0 12px; }

/* Activity panels */
.grid-2{ display:grid; grid-template-columns:1fr; gap:18px; }
@media (min-width: 900px){
  .grid-2{ grid-template-columns: 1fr 1fr; gap:24px; }
}
.panel{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:18px;
}

/* Latest posts */
.posts{ display:grid; grid-template-columns:1fr; gap:16px; }
@media (min-width: 720px){
  .posts{ grid-template-columns: repeat(3, 1fr); gap:18px; }
}
.post{
  background:#fff; border:1px solid var(--border); border-radius:var(--radius); overflow:hidden;
}
.post-media{
  width:100%; aspect-ratio:16/9; background:#eef2f7; /* ここに背景画像を当ててもOK */
}
.post-body{ padding:14px; }
.post h4{ margin:0 0 6px; font-size:16px; }
.meta{ color:var(--muted); font-size:12px; }

/* Footer */
.site-footer{ padding:36px 0; border-top:1px solid var(--border); color:var(--muted); font-size:14px; }

/* Motion preference */
@media (prefers-reduced-motion: reduce){
  *{ animation-duration:0.01ms !important; animation-iteration-count:1 !important; transition-duration:0.01ms !important; }
}
/* Series Section 拡張 */
.series-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: 24px;
}
@media (min-width: 720px) {
  .series-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
}
@media (min-width: 1000px) {
  .series-grid { grid-template-columns: repeat(3, 1fr); gap: 24px; }
}

.series-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.04);
  transition: transform .15s ease, box-shadow .15s ease;
}
.series-card:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.08); }
.series-card h3 { margin: 0 0 8px; font-size: 18px; color: var(--brand); }
.series-card p { font-size: 14px; color: var(--muted); margin: 0 0 16px; }

/* バッジ（NEW / COMING SOON） */
.badge {
  position: absolute; top: 12px; right: 12px;
  font-size: 11px; font-weight: 800;
  color: #0f5132; background: #d1e7dd;
  padding: 4px 8px; border-radius: 999px;
  letter-spacing: .02em;
}
.badge-soft {
  color: #6b7280; background: #eef2f7;
}
/* Contact form */
.contact-form { display:flex; flex-direction:column; gap:12px; }
.contact-form label { display:flex; flex-direction:column; gap:6px; font-weight:600; color:var(--ink); }
.contact-form input, .contact-form textarea {
  border:1px solid var(--border); border-radius:12px; padding:10px 12px;
  font: inherit; background:#fff;
}
.contact-form input:focus, .contact-form textarea:focus {
  outline:2px solid var(--brand); outline-offset:2px;
}
.form-note { color: var(--muted); font-size: 14px; margin-top: 10px; }
.links { list-style:none; padding:0; margin:0; display:grid; gap:8px; }
.links a { color: var(--brand); font-weight:700; }
.links a:hover { text-decoration: underline; }

/* 小さなタイムライン装飾（About用） */
.timeline{ position:relative; margin-left:8px; padding-left:18px; border-left:2px solid var(--border); display:grid; gap:14px; }
.tl-item{ position:relative; }
.tl-dot{ position:absolute; left:-10px; top:6px; width:10px; height:10px; background:var(--brand); border-radius:999px; }
.tl-body h4{ margin:0 0 6px; font-size:16px; color:var(--brand); }
.tl-body p{ margin:0; color:var(--muted); font-size:14px; }

/* Contact form */
.contact-form { display:flex; flex-direction:column; gap:12px; }
.contact-form label { display:flex; flex-direction:column; gap:6px; font-weight:600; color:var(--ink); }
.contact-form input, .contact-form textarea {
  border:1px solid var(--border); border-radius:12px; padding:10px 12px;
  font: inherit; background:#fff;
}
.contact-form input:focus, .contact-form textarea:focus {
  outline:2px solid var(--brand); outline-offset:2px;
}
.form-note { color: var(--muted); font-size: 14px; margin-top: 10px; }
.links { list-style:none; padding:0; margin:0; display:grid; gap:8px; }
.links a { color: var(--brand); font-weight:700; }
.links a:hover { text-decoration: underline; }

/* 小さなタイムライン装飾（About用） */
.timeline{ position:relative; margin-left:8px; padding-left:18px; border-left:2px solid var(--border); display:grid; gap:14px; }
.tl-item{ position:relative; }
.tl-dot{ position:absolute; left:-10px; top:6px; width:10px; height:10px; background:var(--brand); border-radius:999px; }
.tl-body h4{ margin:0 0 6px; font-size:16px; color:var(--brand); }
.tl-body p{ margin:0; color:var(--muted); font-size:14px; }
.header2{
	background-color: #fff;
	height: 25px;
  }
    #top-vd{
    margin-top: -58px;
    text-align: center;
    width: 100%;
    }