:root{
  --bg:#F3F7FB;
  --card:#fff;
  --ink:#1d2b3a;
  --muted:#6b7a8c;
  --accent:#2d6cdf;
  --ok:#2e9e5b;
  --bad:#d9534f;
  --warn:#e0a020;
  --radius:14px
}
*{box-sizing:border-box}
html{font-size:16px}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.6
}
a{color:var(--accent);text-decoration:none}
.wrap{max-width:760px;margin:0 auto;padding:14px 14px 60px}
.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}
.logo{font-weight:700;font-size:1.25rem}
.streak{font-weight:600;color:var(--warn)}
.card{background:var(--card);border-radius:var(--radius);padding:16px;margin:12px 0;box-shadow:0 2px 10px rgba(0,0,0,.05)}
.hero{min-height:220px;display:flex;flex-direction:column;justify-content:center;gap:10px}
.hero-title{font-size:1.6rem;font-weight:800;letter-spacing:.02em}
.hero-copy{color:var(--muted);font-size:1rem}
.btn{display:inline-block;border:0;border-radius:12px;padding:12px 18px;font-size:1.05rem;background:#e8eef7;color:var(--ink);cursor:pointer}
.btn.primary{background:var(--accent);color:#fff}
.btn.ok{background:var(--ok);color:#fff}
.btn:disabled{opacity:.45}
.btn-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}
.pill{display:inline-block;padding:2px 10px;border-radius:999px;background:#e8eef7;font-size:.85rem;color:var(--muted)}
.muted{color:var(--muted)}
.big{font-size:1.4rem;font-weight:700}
.stem{font-size:1.15rem;line-height:1.8}
.stem img{max-width:100%;border-radius:8px;display:block;margin:8px auto}
.steps .step{border-left:3px solid var(--accent);padding:6px 12px;margin:10px 0;background:#f7f9fd;border-radius:0 10px 10px 0}
.steps .why{color:var(--muted);font-size:.95rem;margin-top:4px}
.progress{display:flex;gap:6px;margin:8px 0}
.progress span{flex:1;height:8px;border-radius:4px;background:#dfe6ef}
.progress span.on{background:var(--accent)}
.progress span.done{background:var(--ok)}
.calendar{display:grid;grid-template-columns:repeat(7,1fr);gap:6px}
.calendar div{aspect-ratio:1;border-radius:8px;background:#e8eef7;display:flex;align-items:center;justify-content:center;font-size:.9rem}
.calendar div.done{background:var(--ok);color:#fff}
.calendar div.today{outline:2px solid var(--accent)}
.foot{margin-top:24px;text-align:center;color:var(--muted);font-size:.85rem}
.two-col{display:grid;grid-template-columns:1fr;gap:14px}
@media (min-width:700px){.two-col{grid-template-columns:1fr 1fr}}
.numpad{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:10px}
.numpad button{padding:14px 0;font-size:1.2rem;border:0;border-radius:10px;background:#e8eef7}
.photo-preview{max-width:100%;border-radius:10px;margin-top:8px}
.tag-ok{color:var(--ok);font-weight:700}
.tag-bad{color:var(--bad);font-weight:700}
.timer{font-variant-numeric:tabular-nums;font-weight:700;font-size:1.3rem}