:root {
  --bg: #fbfaf7;
  --surface: #ffffff;
  --text: #1d2433;
  --muted: #5b6474;
  --line: #e6e3dc;
  --accent: #2f6fdb;
  --accent-2: #8a5cf6;
  --accent-soft: #eef3ff;
  --line-green: #06c755;
  --radius: 16px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Noto Sans JP", system-ui, -apple-system, "Hiragino Sans", sans-serif;
  line-height: 1.8;
  font-size: 16px;
}
a { color: var(--accent); }
img { max-width: 100%; display: block; }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 16px; }

/* header */
.site-header { border-bottom: 1px solid var(--line); background: var(--surface); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.logo { font-weight: 700; text-decoration: none; color: var(--text); letter-spacing: .02em; }
.nav { display: flex; gap: 18px; font-size: 14px; }
.nav a { color: var(--muted); text-decoration: none; }
.nav a:hover { color: var(--text); }

/* hero */
.hero { padding: 64px 0 40px; text-align: center; }
.hero .eyebrow { display: inline-block; font-size: 13px; color: var(--accent); background: var(--accent-soft); padding: 4px 12px; border-radius: 999px; margin-bottom: 18px; }
.hero h1 { font-size: clamp(26px, 6vw, 40px); line-height: 1.4; margin: 0 0 16px; }
.hero h1 .grad { background: linear-gradient(90deg, var(--accent), var(--accent-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p { color: var(--muted); margin: 0 auto 28px; max-width: 34em; }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 14px 26px; border-radius: 999px; font-weight: 700; text-decoration: none; transition: transform .15s ease, box-shadow .15s ease; }
.btn:hover { transform: translateY(-1px); box-shadow: 0 6px 18px rgba(0,0,0,.08); }
.btn-line { background: var(--line-green); color: #fff; }
.btn-primary { background: var(--text); color: #fff; }
.btn-ghost { background: var(--surface); color: var(--text); border: 1px solid var(--line); }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }

/* sections */
section { padding: 40px 0; }
.section-title { font-size: 22px; margin: 0 0 6px; }
.section-lead { color: var(--muted); margin: 0 0 22px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }
.card h3 { margin: 0 0 6px; font-size: 17px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.card .num { font-size: 13px; color: var(--accent); font-weight: 700; }

.profile { display: flex; gap: 20px; align-items: flex-start; }
.avatar { flex: none; width: 72px; height: 72px; border-radius: 50%; background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; display: grid; place-items: center; font-weight: 700; font-size: 22px; }
.profile p { margin: 0 0 10px; }
.stats { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 8px; }
.stat { background: var(--accent-soft); color: var(--accent); border-radius: 999px; padding: 4px 12px; font-size: 13px; font-weight: 700; }

.list-links { display: grid; gap: 10px; }
.link-item { display: flex; align-items: center; justify-content: space-between; gap: 12px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px; text-decoration: none; color: var(--text); font-weight: 700; }
.link-item small { display: block; font-weight: 400; color: var(--muted); font-size: 13px; }
.link-item:hover { border-color: var(--accent); }
.link-item .arrow { color: var(--muted); }

.cta-box { text-align: center; background: linear-gradient(135deg, #f1f6ff, #f6f0ff); border-radius: var(--radius); padding: 32px 20px; }
.cta-box h2 { margin: 0 0 8px; font-size: 20px; }
.cta-box p { color: var(--muted); margin: 0 0 20px; }

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

/* footer */
.site-footer { border-top: 1px solid var(--line); padding: 28px 0 40px; margin-top: 40px; font-size: 13px; color: var(--muted); }
.site-footer .links { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 10px; }
.site-footer a { color: var(--muted); }

/* review */
.video-list { display: grid; gap: 18px; }
.video-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.video-card video { width: 100%; background: #000; aspect-ratio: 16 / 9; }
.video-card.vertical video { aspect-ratio: 9 / 16; max-height: 80vh; }
.video-card .meta { padding: 12px 16px; display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; font-size: 14px; }
.video-card .meta strong { word-break: break-all; }
.empty { text-align: center; color: var(--muted); padding: 40px 0; }

@media (max-width: 520px) {
  .nav { gap: 12px; font-size: 13px; }
  .profile { flex-direction: column; }
  .hero { padding: 44px 0 28px; }
}