/* condensed core styles with share buttons */
:root{--bg-grad:linear-gradient(180deg,#fff5fc 0%, #ffe9f3 50%, #fff5fc 100%);--surface:#fff;--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 h2{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}
.list-inline{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}
.metrics{display:grid;grid-template-columns:1fr;gap:10px;margin-top:12px}@media (min-width:560px){.metrics{grid-template-columns:repeat(3,1fr)}}.metric-card{display:flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--border);border-radius:12px;padding:10px 12px;box-shadow:var(--shadow)}.metric-card .icon{font-size:16px}
.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}
.stepper{display:grid;grid-template-columns:repeat(8,1fr);gap:6px;margin:8px 0 0}.step{padding:10px 0;border-radius:10px;border:1px solid var(--border);background:#fff;text-align:center;cursor:pointer}.step.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.stepper-labels{display:flex;justify-content:space-between;font-size:12px;color:#666;margin-top:6px}
.kv{display:grid;grid-template-columns:1fr;gap:12px}@media(min-width:720px){.kv{grid-template-columns:1.2fr .8fr}}.share{display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-start}
.rel-layout{display:grid;grid-template-columns:1fr;gap:14px}@media(min-width:900px){.rel-layout{grid-template-columns:380px 1fr}}.pill{display:inline-block;padding:6px 10px;border:1px solid var(--border);border-radius:999px;background:#fff;margin:2px}.pill:hover{background:#fff0f6}