:root{--brand:#1a5c3a;--brand-dark:#0e3d25;--brand-light:#e8f4ee;--ink:#17221c;--muted:#5b6b62;--line:#dce6e0;--bg:#f7faf8;--card:#fff;--accent:#d97b29}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.6;-webkit-font-smoothing:antialiased}a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}.container{max-width:880px;margin:0 auto;padding:0 18px}.site-header{background:var(--brand);color:#fff;padding:12px 0}.site-header .container{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px}.logo{color:#fff;font-weight:800;font-size:20px;letter-spacing:-.3px}.logo:hover{text-decoration:none}.nav{display:flex;gap:16px;flex-wrap:wrap}.nav a{color:#dcefe4;font-size:14px}.nav a:hover{color:#fff}.hero{padding:28px 0 8px}.hero h1{font-size:30px;margin:0 0 6px;letter-spacing:-.5px}.tagline{color:var(--muted);margin:0 0 18px;font-size:16px}.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px;box-shadow:0 1px 3px rgba(10,40,25,.06)}.mode-toggle{display:flex;gap:8px;margin-bottom:16px}.mode-toggle button{flex:1 1;padding:10px;border:1px solid var(--line);background:#fff;border-radius:10px;cursor:pointer;font-size:14px;font-weight:600;color:var(--muted)}.mode-toggle button.active{background:var(--brand-light);border-color:var(--brand);color:var(--brand-dark)}.day-row{display:grid;grid-template-columns:1fr 1fr 1fr;grid-gap:10px;gap:10px;margin-bottom:10px}label{font-size:12px;color:var(--muted);display:block;margin-bottom:4px;font-weight:600}input,select{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:10px;font-size:16px;background:#fff}input:focus,select:focus{outline:2px solid var(--brand);border-color:var(--brand)}.result{margin-top:16px;padding:16px;background:var(--brand-light);border-radius:12px;display:flex;gap:14px;flex-wrap:wrap;align-items:baseline}.result .big{font-size:32px;font-weight:800;color:var(--brand-dark);letter-spacing:-.5px}.result .sub{color:var(--muted);font-size:14px}.copy-btn{margin-top:12px;background:var(--brand);color:#fff;border:none;border-radius:10px;padding:10px 16px;font-size:14px;font-weight:700;cursor:pointer}.copy-btn:hover{background:var(--brand-dark)}table{width:100%;border-collapse:collapse;margin:14px 0;background:#fff}td,th{border:1px solid var(--line);padding:8px 10px;font-size:14px;text-align:left}th{background:var(--brand-light);color:var(--brand-dark)}td.num{text-align:right;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.prose h2{font-size:22px;margin-top:34px;letter-spacing:-.3px}.prose h3{font-size:17px;margin-top:24px}.prose li,.prose p{font-size:15.5px;color:#2c3a32}.prose ul{padding-left:22px}.internal-links{margin:26px 0;padding:16px;background:var(--card);border:1px dashed var(--line);border-radius:12px;font-size:14px}.internal-links strong{color:var(--brand-dark)}footer{margin-top:48px;padding:24px 0;border-top:1px solid var(--line);color:var(--muted);font-size:13px}footer .container{display:flex;gap:14px;flex-wrap:wrap}@media (max-width:560px){.day-row{grid-template-columns:1fr}.hero h1{font-size:24px}.result .big{font-size:26px}}