:root { --lc:#1f7a4d; --lc-d:#0f5f3a; --bg:#f4f6f5; --line:#e3e9e5; --muted:#6b7a72; }
* { box-sizing: border-box; }
body.auth { margin:0; font-family:-apple-system,"Hiragino Kaku Gothic ProN","Noto Sans JP",Meiryo,sans-serif; background:var(--bg); color:#1b2420; }
.lp { max-width:760px; margin:0 auto; padding:24px 16px 48px; }
.lp-hero { text-align:center; padding:30px 10px 10px; }
.brand { font-weight:800; color:var(--lc); letter-spacing:1px; }
.lp-hero h1 { font-size:1.7rem; margin:14px 0 10px; line-height:1.4; }
.lp-hero p { color:var(--muted); }
.card { background:#fff; border:1px solid var(--line); border-radius:16px; padding:20px; margin:18px auto; max-width:420px; box-shadow:0 6px 20px rgba(0,0,0,.04); }
.tabs { display:flex; gap:6px; margin-bottom:14px; }
.tabs button { flex:1; border:0; background:#eef2f0; color:var(--muted); padding:10px; border-radius:10px; cursor:pointer; font-weight:600; }
.tabs button.active { background:var(--lc); color:#fff; }
.form label { display:block; font-size:.82rem; color:var(--muted); margin:10px 0 4px; }
.form input { width:100%; padding:11px; border:1.5px solid var(--line); border-radius:10px; font-size:1rem; }
.btn { width:100%; margin-top:16px; border:0; background:var(--lc); color:#fff; padding:13px; border-radius:10px; font-weight:700; font-size:1rem; cursor:pointer; }
.btn:active { transform:translateY(1px); }
.err { color:#c0392b; font-size:.88rem; margin-top:10px; }
.muted { color:var(--muted); font-size:.8rem; margin-top:12px; }
.muted a { color:var(--lc); }
.features { display:grid; grid-template-columns:repeat(2,1fr); gap:10px; max-width:420px; margin:10px auto; }
.features .f { background:#fff; border:1px solid var(--line); border-radius:12px; padding:12px; }
.features .f b { display:block; }
.features .f span { color:var(--muted); font-size:.82rem; }
.lp-foot { text-align:center; color:var(--muted); font-size:.8rem; margin-top:24px; }