:root{
  --bg:#0b0d10;
  --panel:#10141a;
  --text:#e9eef5;
  --muted:#aab6c6;
  --line:rgba(255,255,255,.10);
  --accent:#d6b16d;
  --shadow:0 14px 40px rgba(0,0,0,.45);
  --radius:16px;
  --max:980px;
}

*{ box-sizing:border-box; }
html,body{ margin:0; padding:0; }
body{
  background:radial-gradient(1200px 600px at 20% -10%, rgba(214,177,109,.12), transparent 60%),
             radial-gradient(900px 500px at 90% 0%, rgba(90,170,255,.10), transparent 55%),
             var(--bg);
  color:var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", "Helvetica Neue", Arial, "Noto Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  line-height:1.75;
  letter-spacing:.2px;
}

a{ color:inherit; text-decoration:none; }
a:hover{ text-decoration:underline; text-underline-offset:3px; }

.container{ max-width:var(--max); margin:0 auto; padding:0 18px; }

.site-header{
  position:sticky; top:0; z-index:10;
  backdrop-filter: blur(10px);
  background:rgba(11,13,16,.72);
  border-bottom:1px solid var(--line);
}
.nav{
  display:flex; align-items:center; justify-content:space-between;
  height:64px;
}
.brand{
  display:flex; align-items:center; gap:10px;
  font-weight:700; letter-spacing:.6px;
}
.brand .dot{
  width:10px; height:10px; border-radius:99px;
  background:linear-gradient(135deg, var(--accent), rgba(214,177,109,.35));
  box-shadow:0 0 0 3px rgba(214,177,109,.12);
}
.nav-links{ display:flex; gap:14px; flex-wrap:wrap; }
.nav-links a{
  color:var(--muted);
  padding:8px 10px;
  border-radius:10px;
}
.nav-links a:hover{ color:var(--text); background:rgba(255,255,255,.06); text-decoration:none; }

.hero{
  padding:34px 0 12px;
}
.hero h1{
  margin:0;
  font-size:clamp(28px, 3.4vw, 44px);
  line-height:1.15;
  letter-spacing:.2px;
}
.hero p{
  color:var(--muted);
  margin:12px 0 0;
  max-width:72ch;
}

.grid{
  display:grid;
  grid-template-columns: 1fr;
  gap:14px;
  margin:18px 0 36px;
}
@media(min-width:820px){
  .grid{ grid-template-columns: 1.25fr .75fr; gap:18px; }
}
.card{
  background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:18px;
}
.card h2, .card h3{
  margin:0 0 10px;
  font-size:18px;
  letter-spacing:.2px;
}
.card p{ margin:10px 0; color:var(--muted); }

.list{
  list-style:none;
  padding:0; margin:0;
  display:flex; flex-direction:column; gap:10px;
}
.list a{
  display:flex; align-items:center; justify-content:space-between;
  padding:12px 12px;
  border-radius:14px;
  border:1px solid var(--line);
  background:rgba(0,0,0,.18);
}
.list a:hover{
  background:rgba(255,255,255,.06);
  text-decoration:none;
}
.badge{
  font-size:12px;
  color:var(--muted);
  border:1px solid rgba(255,255,255,.14);
  padding:3px 8px;
  border-radius:99px;
}

.article{
  margin:18px 0 44px;
}
.article h2{ margin:22px 0 10px; font-size:20px; }
.article h3{ margin:18px 0 8px; font-size:17px; color:var(--text); }
.article p{ margin:10px 0; color:var(--muted); }
.article ul{ margin:10px 0 0 18px; color:var(--muted); }

.site-footer{
  border-top:1px solid var(--line);
  padding:24px 0;
  color:var(--muted);
  background:rgba(0,0,0,.20);
}
.small{ font-size:12px; color:var(--muted); }
.kicker{
  display:inline-block;
  font-size:12px;
  letter-spacing:.25em;
  color:rgba(214,177,109,.9);
  text-transform:uppercase;
  margin-bottom:10px;
}
.lang{
  margin-left:auto;
  font-size:14px;
  opacity:.9;
  display:flex;
  gap:8px;
  align-items:center;
}
.site-header .container{
  display:flex;
  align-items:center;
  gap:16px;
}
.nav{ display:flex; gap:14px; }

/* ================= HEADER ================= */

.site-header {
  position: sticky;
  top: 0;
  background: #0b0f17;
  z-index: 1000;
}

.site-header .container{
  display:flex;
  flex-direction:column;
  gap:12px;
  padding:16px;
}

.site-header .brand{
  font-size:20px;
  font-weight:600;
}

/* ナビ共通 */
.site-header .nav{
  display:flex;
  gap:16px;
  overflow-x:auto;                 /* ← 横スクロール */
  white-space:nowrap;              /* ← 折り返さない */
  -webkit-overflow-scrolling:touch;
  padding-bottom:6px;
}

.site-header .nav a{
  flex:0 0 auto;                   /* ← 伸びない */
  text-decoration:none;
  font-size:15px;
  opacity:.9;
}

/* スクロールバー非表示（iOS向け） */
.site-header .nav::-webkit-scrollbar{
  display:none;
}

/* =========================
   Header / Nav (Mobile Fix)
========================= */

/* nav内の言語切替を右端で崩さないように */
.site-header .nav{
  display:flex;
  flex-wrap:wrap;          /* ← 2段に折り返しOK */
  gap: 12px 16px;          /* 行/列の余白 */
  justify-content:center;  /* スマホ中央寄せ */
  align-items:center;
}

/* 長いときは 2段でも見切れにくく */
.site-header .nav a{
  white-space:nowrap;
}

/* EN/JA は “常に見える” 位置に固定（スマホで特に重要） */
.site-header .lang{
  display:inline-flex;
  gap:10px;
  align-items:center;
  margin-left:10px;
  padding-left:10px;
  border-left:1px solid rgba(255,255,255,.15);
}

/* ===== スマホ最適化 ===== */
@media (max-width: 520px){

  /* ヘッダー上下余白を少し詰める */
  .site-header .container{
    padding-top: 10px;
    padding-bottom: 10px;
  }

  /* ナビ文字を少し小さく + 行間詰める（1画面に収めやすく） */
  .site-header .nav{
    gap: 10px 14px;
    line-height: 1.2;
  }

  .site-header .nav a{
    font-size: 14px;
    opacity: .95;
  }

  /* brandが長く見える場合の保険 */
  .site-header .brand{
    display:block;
    text-align:center;
    margin-bottom: 8px;
  }
}
/* 最新記事カードだけ下げる（日本語トップ用） */
#latest-articles {
  margin-top: 16px;
}