/* アストのサイト 共通の見た目（夜空の紺・金の星・銀） */
:root {
  --bg: #0b1026;
  --bg-2: #131c3f;
  --card: rgba(255, 255, 255, 0.045);
  --line: rgba(217, 180, 90, 0.28);
  --text: #eef0f8;
  --muted: #aab3d2;
  --gold: #d9b45a;
  --gold-2: #f2d78f;
  --blue: #5b7fe0;
  --radius: 14px;
  --serif: "Shippori Mincho", "Yu Mincho", "Hiragino Mincho ProN", serif;
  --sans: "Zen Kaku Gothic New", "Hiragino Sans", "Yu Gothic", "Meiryo", sans-serif;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.85;
  background-color: var(--bg);
  background-image:
    radial-gradient(1px 1px at 12% 18%, rgba(255,255,255,.7) 50%, transparent 51%),
    radial-gradient(1px 1px at 78% 9%, rgba(255,255,255,.55) 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 33% 62%, rgba(242,215,143,.6) 50%, transparent 51%),
    radial-gradient(1px 1px at 90% 44%, rgba(255,255,255,.5) 50%, transparent 51%),
    radial-gradient(1px 1px at 55% 30%, rgba(255,255,255,.4) 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 6% 80%, rgba(255,255,255,.5) 50%, transparent 51%),
    radial-gradient(ellipse at 70% -10%, rgba(91,127,224,.22), transparent 60%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
  background-attachment: fixed;
  min-height: 100vh;
}

a { color: var(--gold-2); text-underline-offset: 3px; }
a:hover { color: #fff; }

img { max-width: 100%; height: auto; display: block; }

.wrap { max-width: 980px; margin: 0 auto; padding: 0 16px; }

/* ヘッダー */
.site-head {
  border-bottom: 1px solid var(--line);
  background: rgba(11, 16, 38, .72);
  backdrop-filter: blur(6px);
}
.site-head .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding-top: 12px;
  padding-bottom: 12px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: .04em;
}
.brand img { width: 36px; height: 36px; border-radius: 50%; border: 1px solid var(--gold); }
.brand small { color: var(--gold); font-size: .72rem; letter-spacing: .14em; display: block; line-height: 1.2; }

.nav { display: flex; flex-wrap: wrap; gap: 4px 6px; }
.nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: .92rem;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid transparent;
  white-space: nowrap;
}
.nav a:hover { color: var(--text); border-color: var(--line); }
.nav a[aria-current="page"] { color: var(--bg); background: var(--gold); font-weight: 700; }

/* 本文 */
main { padding: 36px 0 56px; }

h1, h2, h3 { font-family: var(--serif); font-weight: 700; line-height: 1.4; letter-spacing: .03em; }
h1 { font-size: clamp(1.7rem, 4.5vw, 2.3rem); margin: 0 0 18px; }
h2 {
  font-size: 1.3rem;
  margin: 44px 0 14px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--line);
}
h2::before { content: "✦ "; color: var(--gold); font-size: .9em; }
p { margin: 0 0 14px; }

.lead { color: var(--muted); }

/* アストのひとこと */
.say {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  margin: 18px 0 22px;
}
.say img {
  width: 56px; height: 56px; flex: 0 0 56px;
  border-radius: 50%;
  border: 1.5px solid var(--gold);
}
.say p {
  margin: 0;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 4px var(--radius) var(--radius) var(--radius);
  padding: 12px 16px;
}

/* トップの立ち絵と名前 */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: 28px;
  align-items: center;
}
.hero-art img {
  max-height: 78vh;
  width: auto;
  margin: 0 auto;
  filter: drop-shadow(0 0 28px rgba(91,127,224,.35));
}
.tag {
  display: inline-block;
  font-size: .78rem;
  letter-spacing: .12em;
  color: var(--gold);
  border: 1px solid var(--gold);
  border-radius: 999px;
  padding: 1px 12px;
  margin-bottom: 10px;
}
.hero h1 { font-size: clamp(2.4rem, 7vw, 3.6rem); margin-bottom: 0; }
.hero .sub {
  font-family: var(--serif);
  color: var(--gold-2);
  letter-spacing: .3em;
  margin: 0 0 8px;
}

/* 動画（押すと再生） */
.video {
  display: grid;
  grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
  gap: 22px;
  align-items: center;
}
.video .yt, .video iframe {
  display: block;
  position: relative;
  width: 100%;
  aspect-ratio: 9 / 16;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: #000;
}
.video .yt img { width: 100%; height: 100%; object-fit: cover; }
.video .play {
  position: absolute; inset: 0; margin: auto;
  width: 68px; height: 68px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: rgba(11, 16, 38, .72);
  border: 2px solid var(--gold);
  color: var(--gold-2);
  font-size: 1.6rem;
  padding-left: 4px;
  transition: transform .2s;
}
.video .yt:hover .play { transform: scale(1.08); }
.video-text p { margin-bottom: 8px; }

/* 日記 */
.dates { display: flex; flex-wrap: wrap; gap: 6px; margin: 4px 0 26px; }
.dates a {
  font-size: .85rem;
  text-decoration: none;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 1px 10px;
}
.dates a:hover { color: var(--text); border-color: var(--gold); }
.entry {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 22px 8px;
  margin: 0 0 22px;
  scroll-margin-top: 16px;
}
.entry time { display: block; color: var(--gold); font-size: .88rem; font-weight: 700; letter-spacing: .05em; }
.entry h2 { margin: 4px 0 12px; padding: 0; border: none; font-size: 1.25rem; }
.entry h2::before { content: none; }
.entry-body p { margin-bottom: 14px; }

/* 表の形の説明 */
.facts { margin: 0; display: grid; grid-template-columns: 8.5em 1fr; gap: 10px 18px; }
.facts dt { color: var(--gold); font-weight: 700; }
.facts dd { margin: 0; }

/* カード */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; }
.card {
  display: block;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
  color: var(--text);
  text-decoration: none;
  transition: border-color .2s, transform .2s;
}
.card:hover { border-color: var(--gold); transform: translateY(-2px); color: var(--text); }
.card strong { font-family: var(--serif); font-size: 1.08rem; display: block; margin-bottom: 4px; }
.card span { color: var(--muted); font-size: .9rem; line-height: 1.6; display: block; }

.box {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
}

ul.plain { margin: 0; padding-left: 1.2em; }
ul.plain li { margin-bottom: 6px; }
ul.plain li::marker { color: var(--gold); }

/* これまでの歩み */
.timeline { list-style: none; margin: 0; padding: 0; border-left: 2px solid var(--line); }
.timeline li { position: relative; padding: 0 0 18px 22px; }
.timeline li::before {
  content: "";
  position: absolute; left: -7px; top: .55em;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--gold);
}
.timeline time { display: block; color: var(--gold); font-size: .88rem; font-weight: 700; letter-spacing: .05em; }

/* 予定の表 */
.sched { width: 100%; border-collapse: collapse; }
.sched th, .sched td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.sched th { color: var(--gold); font-weight: 700; width: 9em; white-space: nowrap; }

.empty { color: var(--muted); font-style: normal; }

/* リンク */
.links { display: grid; gap: 14px; }
.links .card { display: flex; gap: 14px; align-items: center; }
.links .mark {
  flex: 0 0 44px; height: 44px;
  border-radius: 12px;
  display: grid; place-items: center;
  font-weight: 700; font-size: 1.1rem;
  color: var(--bg); background: var(--gold);
}

/* フッター */
.site-foot {
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: .85rem;
  padding: 22px 0 30px;
}
.site-foot p { margin: 0 0 6px; }

@media (max-width: 720px) {
  main { padding-top: 24px; }
  .hero { grid-template-columns: 1fr; gap: 10px; }
  .hero-art img { max-height: 52vh; }
  .box { padding: 14px 14px; }
  .hero-text { text-align: left; }
  .video { grid-template-columns: 1fr; gap: 12px; }
  .video .yt, .video iframe { max-width: 300px; margin: 0 auto; }
  .facts { grid-template-columns: 1fr; gap: 2px; }
  .facts dd { margin-bottom: 10px; }
  .nav { width: 100%; }
  .nav a { padding: 3px 9px; font-size: .88rem; }
  .sched th { width: 6.5em; }
}