:root{
  --ink:#14212b; --muted:#5a6670; --line:#dfe3e6; --line-soft:#eceff1; --field:#9aa5ad;
  --brand:#316745; --brand-dark:#234a32; --gain:#1d5fae; --loss:#b3261e; --bg:#ffffff; --ro:#f3f5f6;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:'Zen Kaku Gothic New',system-ui,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6}
a{color:var(--brand)} a:hover{color:var(--brand-dark)}
h1{margin:0 0 20px;font-size:22px;font-weight:700;line-height:1.4}
h2{margin:0 0 12px;font-size:16px;font-weight:700}
p{margin:0 0 16px}
.muted{color:var(--muted)} .small{font-size:13px} .xsmall{font-size:12px}
.num{font-variant-numeric:tabular-nums}
.gain{color:var(--gain)} .loss{color:var(--loss)} .flat{color:var(--ink)}
.lead{font-size:14px;line-height:1.8;margin-bottom:28px}
.small-lead{font-size:13px;line-height:1.8}
.pad{display:inline-block;padding:10px 0;font-size:14px}
.inline{display:inline;margin:0}

/* ブランド */
.brand{display:flex;flex-direction:column;gap:4px}
.brand img{display:block;height:auto}
.brand-sub{font-size:11px;font-weight:500;letter-spacing:.12em;padding-left:2px}
.brand-lg{gap:8px}
.brand-lg .brand-sub{font-size:13px;letter-spacing:.14em}

/* フォーム */
.stack{display:flex;flex-direction:column;gap:20px;margin-bottom:16px}
.field{display:flex;flex-direction:column;gap:8px}
label{font-size:13px;font-weight:500}
input,select,textarea{font:inherit;font-size:16px;color:var(--ink);background:#fff;border:1px solid var(--field);border-radius:0;padding:0 14px;min-height:48px;width:100%}
textarea{padding:12px 14px;resize:vertical}
input[readonly]{background:var(--ro);border-color:var(--line)}
input:focus,select:focus,textarea:focus,.btn:focus-visible,a:focus-visible,button:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.btn{display:flex;align-items:center;justify-content:center;min-height:50px;width:100%;border:1px solid var(--brand);background:var(--brand);color:#fff;font:inherit;font-size:15px;font-weight:700;text-decoration:none;cursor:pointer;margin-top:8px}
.btn:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff}
.btn-outline{background:#fff;color:var(--brand);font-weight:500;font-size:14px;min-height:48px}
.btn-outline:hover{background:#f1f6f2;color:var(--brand-dark)}
.linklike{background:none;border:0;padding:12px 0;font:inherit;font-size:13px;cursor:pointer;color:var(--brand)}
.linklike.muted{color:var(--muted)}
.error{border-left:3px solid var(--loss);background:#fbeeed;padding:10px 12px;font-size:14px}
.notice{border-left:3px solid var(--brand);background:#eef5f0;padding:10px 12px;font-size:14px}

/* ログイン系 */
.auth{max-width:440px;margin:0 auto;min-height:100vh;padding:72px 28px 32px;display:flex;flex-direction:column}
.auth .lede{font-size:13px;color:var(--muted);margin:6px 0 56px}
.first-time{margin-top:32px;padding-top:24px;border-top:1px solid var(--line)}
.first-time h2{font-size:14px;margin-bottom:10px}
.first-time p{font-size:13px;line-height:1.7;margin-bottom:6px}
.auth-foot{margin-top:auto;padding-top:40px;font-size:11px;color:var(--muted)}

/* ログイン後 */
.page{max-width:560px;margin:0 auto;min-height:100vh;display:flex;flex-direction:column}
.app-header{display:flex;flex-direction:column;gap:4px;padding:14px 24px 0;border-bottom:1px solid var(--line)}
.app-nav{display:flex;gap:22px;font-size:13px;align-items:center}
.app-nav a{text-decoration:none;padding:12px 0}
.app-nav a[aria-current=page]{color:var(--ink);font-weight:700}
main{flex:1 0 auto}
.sec{padding:24px;border-bottom:1px solid var(--line)}
.sec:last-child{border-bottom:0}
.hero{padding-top:28px;display:flex;flex-direction:column;gap:6px}
.big{font-size:40px;font-weight:700;letter-spacing:-.01em;line-height:1.25}
.pnl{display:flex;gap:12px;align-items:baseline;font-size:15px;font-weight:700}
.pnl .muted{font-weight:400}
.hero .xsmall{margin-top:6px}
.grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 16px;padding:20px 24px}
.grid2>div{display:flex;flex-direction:column;gap:4px}
.mid{font-size:17px;font-weight:500}
.chart-sec{border-bottom:0;padding-bottom:8px}
.tabs{display:flex;border:1px solid #c9d0d5;margin-bottom:14px}
.tabs a{flex:1 1 0;display:flex;align-items:center;justify-content:center;min-height:44px;font-size:13px;color:var(--ink);text-decoration:none}
.tabs a+a{border-left:1px solid #c9d0d5}
.tabs a.on{background:var(--brand);color:#fff;font-weight:700}
.chart{display:block;width:100%;height:auto;margin-bottom:8px}
.periods{padding-top:16px}
.periods h2{margin-bottom:8px}
.row{display:flex;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px solid var(--line-soft);font-size:14px}
.row span:last-child{font-weight:500;text-align:right}
.app-foot{padding:20px 24px 28px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:8px;font-size:11px;color:var(--muted);line-height:1.7}
@media (min-width:600px){.page{border-left:1px solid var(--line);border-right:1px solid var(--line)}}