*{box-sizing:border-box}
:root{--green:#176b40;--dark:#105b32;--border:#dfe8e1;--text:#26352b;--muted:#68756c}
body{margin:0;padding:28px 14px;background:#f1f5f2;color:var(--text);font:15px/1.6 Arial,Helvetica,sans-serif}
.calculator{width:100%;max-width:780px;margin:0 auto;padding:30px;background:#fff;border:1px solid #e1e9e3;border-radius:16px;box-shadow:0 8px 30px rgba(24,65,40,.09)}
.header{text-align:center;padding:8px 0 24px;margin-bottom:24px;border-bottom:2px solid #e4eee6}
.brand{color:#16834a;font-size:13px;font-weight:800;letter-spacing:2px}
h1{color:var(--green);font-size:clamp(24px,4vw,32px);line-height:1.25;margin:12px 0 8px}
.header p{margin:0;color:#748077;font-size:14px}
.notice{padding:15px 18px;margin-bottom:24px;background:#edf8f0;border-left:4px solid #21864e;border-radius:8px;color:#315b40}
.section{padding:24px;margin-bottom:22px;border:1px solid var(--border);border-radius:12px;background:#fff}
.section h2,.results h2{color:var(--green);font-size:20px;margin:0 0 18px;padding-bottom:12px;border-bottom:1px solid #e7eee8}
.field{margin:0 0 16px}
label{display:block;margin:0 0 7px;color:#304438;font-size:14px;font-weight:700}
input,select{display:block;width:100%;min-height:46px;padding:11px 13px;border:1px solid #cbd8ce;border-radius:7px;background:#fff;color:var(--text);font:inherit}
input:focus,select:focus{outline:none;border-color:#21864e;box-shadow:0 0 0 3px rgba(33,134,78,.12)}
.helper{color:var(--muted);font-size:13px;line-height:1.7;margin:8px 0 0}
.result-row{display:flex;justify-content:space-between;align-items:flex-start;gap:18px;padding:13px 0;border-bottom:1px solid #e8eee9;font-size:14px}
.result-row span{flex:1;min-width:0}
.result-row strong{flex:0 0 auto;max-width:48%;text-align:right;overflow-wrap:anywhere;color:var(--green)}
button{display:block;width:100%;min-height:48px;padding:13px 18px;margin:12px 0;border:0;border-radius:8px;background:#187443;color:#fff;font:inherit;font-size:16px;font-weight:700;cursor:pointer}
button:hover{background:var(--dark)}
.reset-button{background:#e8eee9;color:#304438;margin-bottom:22px}
.reset-button:hover{background:#d8e3db}
.results{margin-top:24px;padding:24px;border:2px solid #d5e8da;border-radius:12px;background:#fbfdfb}
.results[hidden]{display:none}
.final-row{margin-top:14px;padding:17px;border:0;border-radius:8px;background:#e6f5e9;font-size:15px;font-weight:700}
.final-row strong{color:#125b32}
.disclaimer{margin:20px 0 0;color:var(--muted);font-size:12px;line-height:1.8}
footer{margin-top:26px;padding-top:18px;border-top:1px solid #e4ece6;text-align:center;color:#778279;font-size:12px}
@media(max-width:600px){body{padding:12px 8px}.calculator{padding:16px;border-radius:12px}.section,.results{padding:16px;margin-bottom:16px}.section h2,.results h2{font-size:18px}.result-row{gap:10px;font-size:13px}.result-row strong{max-width:46%}}