:root{--ink:#24312d;--muted:#65736d;--paper:#f6f8f4;--card:#fff;--line:#dbe4dc;--accent:#2f6b58;--accent-dark:#204d40;--soft:#eaf2eb;--error:#a33b32;--shadow:0 18px 50px rgba(30,56,43,.09)}
*{box-sizing:border-box}
html{overflow-wrap:anywhere}
body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.55 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
a{color:var(--accent-dark);font-weight:650;text-underline-offset:3px}
button,input,select{font:inherit}
button{cursor:pointer}
.wrap{width:min(100% - 32px,1040px);margin-inline:auto}
.site-header{border-bottom:1px solid var(--line);background:rgba(246,248,244,.95)}
.header-inner{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:10px;min-width:0;color:var(--ink);text-decoration:none;font-weight:800;letter-spacing:-.02em}
.brand-mark{display:grid;place-items:center;flex:none;width:30px;height:30px;border-radius:9px;background:var(--accent);color:#fff;font-size:22px}
.privacy-link{font-size:.9rem}
.hero{padding:66px 0 34px;max-width:760px}
.eyebrow{text-transform:uppercase;letter-spacing:.13em;font-size:.72rem;font-weight:800;color:var(--accent);margin:0 0 10px}
.hero h1{font-size:clamp(2.2rem,6vw,4.2rem);line-height:1.03;letter-spacing:-.055em;margin:0 0 18px}
.lede{font-size:1.13rem;color:var(--muted);max-width:650px;margin:0}
.planner-card{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:clamp(20px,4vw,40px);box-shadow:var(--shadow)}
.card-heading{display:flex;justify-content:space-between;gap:20px;align-items:start}
.card-heading h2{margin:0;font-size:1.6rem;letter-spacing:-.03em}
.local-badge{background:var(--soft);color:var(--accent-dark);border-radius:999px;padding:6px 11px;font-size:.78rem;font-weight:750;white-space:nowrap}
.mode-switch{display:flex;gap:8px;margin:28px 0 10px;padding:5px;border-radius:12px;background:var(--paper)}
.mode-button{border:0;background:transparent;color:var(--muted);border-radius:8px;padding:11px 14px;font-weight:750;flex:1}
.mode-button.is-active{background:var(--accent);color:#fff;box-shadow:0 3px 9px rgba(47,107,88,.2)}
.mode-help{margin:0 0 24px;color:var(--muted)}
.form-error{min-height:0;color:var(--error);font-weight:700;margin-bottom:0}
.form-error:not(:empty){border-left:3px solid var(--error);padding:9px 12px;margin-bottom:18px;background:#fff3f1}
.mode-panel label,.field-grid label{display:block;font-weight:750;margin-bottom:7px}
.field-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:20px}
.mode-panel input,.field-grid input,.field-grid select{width:100%;min-width:0;min-height:48px;border:1px solid #b9c9be;border-radius:9px;background:#fff;color:var(--ink);padding:10px 12px}
.mode-panel input:focus,.field-grid input:focus,.field-grid select:focus,.mode-button:focus-visible,.calculate-button:focus-visible,a:focus-visible{outline:3px solid #9bcab5;outline-offset:2px}
.input-with-unit{display:flex;align-items:center}
.input-with-unit input{min-width:0}
.unit-suffix{padding-left:10px;color:var(--muted);font-size:.86rem;white-space:nowrap}
.unit-prefix{padding-left:12px;color:var(--muted);font-weight:700}
.unit-prefix+input{border-left:0;border-radius:0 9px 9px 0}
.optional{color:var(--muted);font-weight:500}
.field-note{font-size:.86rem;color:var(--muted);margin:18px 0}
.calculate-button{border:0;border-radius:10px;padding:13px 20px;background:var(--accent-dark);color:#fff;font-weight:800;width:100%;min-height:50px}
.calculate-button:hover{background:#173b31}
.result{margin-top:26px}
.result:empty{display:none}
.result h2{margin:0 0 4px;font-size:1.35rem}
.result-intro{color:var(--muted);margin:0 0 16px}
.metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:0}
.metric{min-width:0;background:var(--soft);border-radius:12px;padding:14px}
.metric dt{font-size:.78rem;color:var(--muted);font-weight:700}
.metric dd{margin:3px 0 0;font-size:1.14rem;font-weight:800}
.metric dd span{display:block;font-size:.72rem;color:var(--muted);font-weight:500}
.next-date{margin:18px 0 0;background:#f5efe1;border-left:4px solid #d29b45;padding:13px 15px}
.next-date strong{display:block}
.next-date span{display:block;color:var(--muted);font-size:.88rem;margin-top:3px}
.info-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin:34px 0}
.info-grid article,.sources{border-top:2px solid var(--line);padding-top:18px}
.info-grid h2,.sources h2{font-size:1.08rem;margin:0 0 7px}
.info-grid p,.sources p{color:var(--muted);margin:0}
.sources p+p{margin-top:12px}
.sources{margin:8px 0 40px}
.sources ul{margin:12px 0 0;padding-left:20px}
.sources li{margin:7px 0}
.site-footer{background:#eaf0ea;padding:24px 0;color:var(--muted);font-size:.88rem}
.site-footer p{margin:0 0 5px}
.site-footer a{font-size:.88rem}
@media(max-width:620px){
 .wrap{width:min(100% - 24px,1040px)}
 .header-inner{min-height:62px}
 .hero{padding:42px 0 26px}
 .card-heading{display:block}
 .local-badge{display:inline-block;margin-top:14px}
 .mode-switch{display:block}
 .mode-button{width:100%;margin:2px 0}
 .field-grid,.info-grid{grid-template-columns:minmax(0,1fr)}
 .metrics{grid-template-columns:repeat(2,minmax(0,1fr))}
 .unit-suffix{font-size:.76rem}
 .planner-card{border-radius:16px;padding:20px 16px}
}
@media(max-width:360px){
 .metrics{grid-template-columns:minmax(0,1fr)}
 .hero h1{font-size:2.15rem}
 .unit-suffix{display:none}
}