/* UTF-8 — Affinia v3 fixes: center buttons, richer index, Likert slider */
:root{
  --bg-grad:linear-gradient(180deg,#fff5fc 0%, #ffe9f3 50%, #fff5fc 100%);
  --surface:#ffffff;
  --primary:#e97da0;
  --primary-d:#d5658a;
  --secondary:#8126d2;
  --ink:#2c2c2c;
  --sub:#6b6b6b;
  --border:#f0ddea;
  --ring:rgba(233,125,160,.35);
  --radius:18px;
  --shadow:0 10px 30px rgba(0,0,0,.08);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{
  background:var(--bg-grad);
  color:var(--ink);
  font-family:'Noto Sans JP', system-ui, -apple-system, 'Hiragino Kaku Gothic ProN', Meiryo, sans-serif;
  line-height:1.75;
  font-size:16px;
}
.container{max-width:100%;padding:16px;margin:0 auto}
@media (min-width:560px){.container{max-width:620px}}
@media (min-width:920px){.container{max-width:980px}}

.site-header{
  position:sticky; top:0; z-index:50;
  backdrop-filter:saturate(1.1) blur(6px);
  background:rgba(255,255,255,.7);
  border-bottom:1px solid var(--border);
}
.header-inner{display:flex;align-items:center;gap:10px}
.logo{font-weight:800;font-size:clamp(18px,3.2vw,22px);color:var(--secondary);text-decoration:none}
.nav{display:none;gap:10px;margin-left:auto}
.nav a{padding:8px 10px;border-radius:999px;text-decoration:none;color:#555}
.nav a:hover{background:#f8f1f7}
.nav.open{display:flex;flex-wrap:wrap}
.nav-toggle{margin-left:auto;font-size:22px;padding:6px 10px;border-radius:10px;border:1px solid var(--border);background:#fff}
@media (min-width:920px){.nav{display:flex}.nav-toggle{display:none}}

.hero{padding:24px;border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow);border:1px solid var(--border)}
.kicker{display:inline-block;color:var(--secondary);font-weight:700;letter-spacing:.08em;margin-bottom:6px}
.hero h1{font-size:clamp(22px,6vw,36px);line-height:1.3;margin:.2em 0 .3em}
.hero p{color:var(--sub);margin:0 0 14px}
.btn{display:inline-flex;align-items:center;gap:8px;justify-content:center;cursor:pointer;
  padding:12px 18px;border-radius:999px;text-decoration:none;border:1px solid transparent;transition:.15s;
  box-shadow:var(--shadow);font-weight:600}
.btn.primary{background:var(--primary);color:#fff}
.btn.primary:hover{background:var(--primary-d)}
.btn.ghost{background:#fff;border-color:var(--border);color:#444}
.btn.ghost:hover{border-color:#ead2e2}
.btn:focus{outline:3px solid var(--ring);outline-offset:2px}

.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px}
.grid{display:grid;gap:14px}
.cols-2{grid-template-columns:1fr}
.cols-3{grid-template-columns:1fr}
.cols-4{grid-template-columns:1fr}
@media (min-width:720px){.cols-2{grid-template-columns:repeat(2,1fr)}.cols-3{grid-template-columns:repeat(3,1fr)}}
@media (min-width:980px){.cols-4{grid-template-columns:repeat(4,1fr)}}

.badge{display:inline-block;padding:4px 10px;border-radius:999px;background:#fbe1ec;color:#a83e65;font-size:12px;margin-left:8px}
.small{font-size:13px;color:#777}
hr{border:none;border-top:1px solid var(--border);margin:18px 0}
.list-inline{display:flex;gap:10px;flex-wrap:wrap;justify-content:center} /* center buttons by default */
.align-start{justify-content:flex-start}
.align-end{justify-content:flex-end}

.progress{height:10px;border-radius:999px;background:#ffe4f0;overflow:hidden;margin:10px 0 16px}
.progress>.bar{height:100%;width:0;background:linear-gradient(90deg,var(--primary),var(--secondary))}

.q-title{font-weight:800;margin-bottom:8px;text-align:center}
.q-choices{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.choice{padding:10px 14px;border:1px solid var(--border);background:#fff;border-radius:12px;cursor:pointer}
.choice.active{background:var(--primary);color:#fff;border-color:var(--primary)}

/* Likert slider */
.likert{margin:8px 0 0}
.range-row{display:flex;align-items:center;gap:8px}
.range-row .label{font-size:12px;color:#666;flex:0 0 90px}
.range-row input[type=range]{flex:1; -webkit-appearance:none; height:10px; background:#ffe4f0; border-radius:999px; outline:none}
.range-row input[type=range]::-webkit-slider-thumb{ -webkit-appearance:none; width:22px; height:22px; border-radius:50%; background:var(--primary); box-shadow:0 2px 6px rgba(0,0,0,.2)}

.footer-inner{display:flex;flex-direction:column;gap:10px;align-items:flex-start}
.footer-inner .links{display:flex;gap:12px;flex-wrap:wrap;justify-content:center}
.footer-inner a{color:#555;text-decoration:none}
.copy{color:#777}
@media (min-width:720px){.footer-inner{flex-direction:row;justify-content:space-between;align-items:center}}

.sticky-cta{position:sticky;bottom:10px;display:flex;justify-content:center;pointer-events:none}
.sticky-cta .btn{pointer-events:auto}

.hero-metrics{display:flex;gap:10px;flex-wrap:wrap;margin-top:8px}
.metric{display:inline-flex;align-items:center;gap:6px;background:#fff;border:1px solid var(--border);border-radius:999px;padding:6px 10px;font-size:13px;color:#444}