:root{
  --ink:#14243B; --ink-2:#3A4A60; --muted:#5D6B7E;
  --paper:#F7F6F1; --card:#FFFFFF; --line:#DCD9CE; --rule:#E9E6DC;
  --green:#17694B; --green-d:#0F5239; --green-l:#E4F1EA;
  --amber:#E8A33D; --amber-l:#FCF1DD;
  --serif:"Source Serif 4",Georgia,"Times New Roman",serif;
  --sans:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:400 1.0625rem/1.65 var(--sans)}
a{color:var(--green)} a:hover{color:var(--green-d)}
:focus-visible{outline:3px solid var(--amber);outline-offset:2px;border-radius:3px}
.wrap{max-width:1120px;margin:0 auto;padding:0 16px}
h1,h2,h3{font-family:var(--serif);font-weight:700;line-height:1.15;letter-spacing:-.01em;color:var(--ink)}
h1{font-size:clamp(2rem,4.6vw,2.9rem);margin:.4rem 0 .6rem}
.skip{position:absolute;left:-999px;top:0;background:var(--ink);color:#fff;padding:.5rem 1rem;z-index:9}
.skip:focus{left:8px}

/* header */
.site-head{background:var(--ink);color:#fff}
.site-head .wrap{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:62px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:.55rem;color:#fff;text-decoration:none;font-weight:600;font-size:1.1rem}
.brand:hover{color:#fff}
.brand svg{width:30px;height:30px}
.brand b,.brand-s b{color:var(--amber);font-weight:700}
.site-head nav{display:flex;gap:.25rem;flex-wrap:wrap}
.site-head nav a{color:#D5DDE8;text-decoration:none;font-size:.95rem;padding:.45rem .7rem;border-radius:6px}
.site-head nav a:hover,.site-head nav a[aria-current]{background:#22364F;color:#fff}

/* hero */
.hero{background:var(--ink);color:#fff;padding:2.5rem 0 3rem;border-top:1px solid #22364F}
.hero h1{color:#fff;max-width:22ch;font-size:clamp(2.2rem,5.5vw,3.6rem)}
.hero .lead{color:#C9D3E0;max-width:56ch}
.eyebrow{margin:0;color:var(--amber);font-weight:600;font-size:.9rem;letter-spacing:.04em;text-transform:uppercase}
.due{display:inline-flex;flex-wrap:wrap;gap:.4rem .8rem;align-items:center;background:#1E3350;border:1px solid #2E4767;border-radius:10px;padding:.65rem 1rem;margin:.6rem 0 0}
.due strong{color:var(--amber)}
.due a{color:#fff;font-weight:600}
h2.sec{font-size:1.6rem;margin:2.6rem 0 1rem}

.lead{font-size:1.15rem;color:var(--ink-2);max-width:62ch;margin:0 0 .8rem}
.checked{font-size:.9rem;color:var(--muted);margin:0 0 1.4rem}
.crumbs{font-size:.88rem;color:var(--muted);margin:1.2rem 0 0}
.crumbs a{color:var(--muted)}

/* calculator */
.calc{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);grid-template-areas:"form result" "pick result";grid-template-rows:auto 1fr;gap:20px;align-items:start}
.calc .inputs{grid-area:form}.calc .result{grid-area:result}.calc .pick{grid-area:pick}
.inputs{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:1.4rem;display:grid;grid-template-columns:1fr 1fr;gap:1rem 1.2rem}
.field{display:flex;flex-direction:column;gap:.35rem;font-size:.95rem;font-weight:600;color:var(--ink)}
.field small{font-weight:400;color:var(--muted);font-size:.83rem;line-height:1.4}
.input{display:flex;align-items:center;border:1.5px solid #C8C4B6;border-radius:9px;background:#fff;overflow:hidden}
.input:focus-within{border-color:var(--green);box-shadow:0 0 0 3px var(--green-l)}
.input b{padding:0 .1rem 0 .7rem;color:var(--muted);font-weight:500}
.input.percent b{padding:0 .7rem 0 .1rem}
.input input,.field select{width:100%;border:0;background:transparent;font:500 1.05rem var(--sans);color:var(--ink);padding:.62rem .7rem;font-variant-numeric:tabular-nums;min-width:0}
.input input:focus,.field select:focus{outline:none}
.field select{border:1.5px solid #C8C4B6;border-radius:9px;background:#fff;appearance:auto}
.field select:focus{border-color:var(--green);box-shadow:0 0 0 3px var(--green-l)}

.result{position:sticky;top:16px;background:var(--card);border:1px solid var(--line);border-top:6px solid var(--green);border-radius:14px;padding:1.4rem 1.4rem 1.1rem;box-shadow:0 10px 30px -18px rgba(20,36,59,.35)}
.r-head{margin:0;font-size:.85rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--muted)}
.r-big{margin:.1rem 0 .9rem;font:700 clamp(2.2rem,5vw,2.9rem)/1.05 var(--serif);color:var(--green);font-variant-numeric:tabular-nums}
.r-lines{list-style:none;margin:0;padding:0;border-top:1px solid var(--rule)}
.r-lines li{display:flex;justify-content:space-between;gap:1rem;padding:.5rem 0;border-bottom:1px dashed var(--rule);font-size:.97rem}
.r-lines li span:last-child{font-variant-numeric:tabular-nums;font-weight:600;white-space:nowrap}
.r-lines li.sub{border-bottom:1px solid var(--ink-2);font-weight:700}
.r-lines li.good span:last-child{color:var(--green)}
.r-note{margin:.9rem 0 .4rem;background:var(--amber-l);border-radius:8px;padding:.7rem .85rem;font-size:.93rem;color:#4A3812}
.reset{margin-top:.5rem;background:none;border:0;color:var(--muted);font:500 .88rem var(--sans);text-decoration:underline;cursor:pointer;padding:.3rem 0}
.reset:hover{color:var(--ink)}
.mbar{display:none}

/* calculator buttons */
.pick-h{margin:0 0 .6rem;font-size:.8rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.pick ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:10px}
.pbtn{display:flex;align-items:center;justify-content:space-between;gap:.6rem;min-height:52px;padding:.7rem .8rem .7rem 1rem;background:var(--card);border:1.5px solid var(--line);border-radius:10px;color:var(--ink);font-weight:600;text-decoration:none;box-shadow:0 2px 0 var(--line);transition:border-color .15s,background .15s,transform .1s}
.pbtn i{flex:none;display:grid;place-items:center;width:30px;height:30px;border-radius:50%;background:var(--green-l);color:var(--green);font-style:normal;font-weight:700}
.pbtn:hover{border-color:var(--green);background:#F3FAF6;color:var(--ink)}
.pbtn:hover i{background:var(--green);color:#fff}
.pbtn:active{transform:translateY(1px);box-shadow:none}

/* hero calculator buttons */
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;align-items:center}
.hero-grid h1{font-size:clamp(2.2rem,4.4vw,3.2rem)}
.pick li{display:flex}
.pick .pbtn{flex:1}
.hero-pick .pbtn{font-size:.95rem;white-space:nowrap}
.hero-pick .pick-h{color:#9FB0C5}
.hero-pick .pbtn{background:#1E3350;border-color:#2E4767;color:#fff;box-shadow:0 2px 0 #0D1828}
.hero-pick .pbtn i{background:#2B4566;color:var(--amber)}
.hero-pick .pbtn:hover{background:#25405F;border-color:var(--amber);color:#fff}
.hero-pick .pbtn:hover i{background:var(--amber);color:var(--ink)}
.hero-pick li:last-child:nth-child(odd){grid-column:1 / -1}

/* due dates under the home form */
.duebox{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:1.2rem 1.3rem}
.duebox ol{list-style:none;margin:0 0 .8rem;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.duebox li{background:var(--paper);border-radius:10px;padding:.7rem .75rem;display:flex;flex-direction:column;gap:.15rem}
.duebox li span{font-size:.8rem;font-weight:700;color:var(--muted)}
.duebox li strong{font-size:.98rem;font-variant-numeric:tabular-nums}
.duebox a{font-weight:600;text-decoration:none}
.duebox a:hover{text-decoration:underline}

/* header menu */
.menu{position:relative}
.menu summary{list-style:none;cursor:pointer;color:#D5DDE8;font-size:.95rem;padding:.45rem .7rem;border-radius:6px;display:flex;align-items:center;gap:.35rem}
.menu summary::-webkit-details-marker{display:none}
.menu summary::after{content:"";width:7px;height:7px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg) translateY(-2px)}
.menu[open] summary::after{transform:rotate(-135deg) translateY(-1px)}
.menu summary:hover,.menu[open] summary{background:#22364F;color:#fff}
.menu ul{position:absolute;right:0;top:calc(100% + 8px);z-index:20;list-style:none;margin:0;padding:.4rem;min-width:250px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 18px 40px -16px rgba(20,36,59,.45)}
.site-head .menu ul a{display:block;color:var(--ink);padding:.6rem .8rem;border-radius:8px;font-size:.97rem;white-space:nowrap}
.site-head .menu ul a:hover,.site-head .menu ul a[aria-current]{background:var(--green-l);color:var(--green-d)}

/* content */
.layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:40px;margin-top:2.6rem;align-items:start}
.prose{max-width:72ch}
.prose h2{font-size:1.55rem;margin:2.2rem 0 .7rem}
.prose h2:first-child{margin-top:0}
.prose p,.prose li{color:var(--ink-2)}
.prose ul,.prose ol{padding-left:1.25rem}
.prose li{margin:.35rem 0}
.prose details{border-bottom:1px solid var(--line);padding:.2rem 0}
.prose summary{cursor:pointer;font-weight:600;padding:.65rem 0;color:var(--ink)}
.prose details p{margin:0 0 .8rem}
.byline{color:var(--muted);font-size:.92rem;margin-top:0}
.source{font-size:.9rem;color:var(--muted);border-top:1px solid var(--line);padding-top:1rem;margin-top:2rem}
.page{padding:1rem 0 2rem}
.table-wrap{overflow-x:auto;margin:1rem 0;border:1px solid var(--line);border-radius:10px;background:var(--card)}
table{border-collapse:collapse;width:100%;font-size:.95rem}
th,td{text-align:left;padding:.6rem .8rem;border-bottom:1px solid var(--rule);vertical-align:top}
th{background:#F0EEE6;font-weight:700;color:var(--ink)}
tr:last-child td{border-bottom:0}
td{font-variant-numeric:tabular-nums}

.side{position:sticky;top:16px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:1.2rem 1.3rem}
.side ul{list-style:none;margin:0 0 1.2rem;padding:0}
.side li{border-bottom:1px solid var(--rule)}
.side li:last-child{border-bottom:0}
.side li a{display:block;padding:.45rem 0;text-decoration:none;font-weight:500}
.side li a:hover{text-decoration:underline}
.fh{margin:0 0 .4rem;font-size:.8rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.dates li{display:flex;justify-content:space-between;padding:.45rem 0}
.dates span{color:var(--muted);font-weight:600}

.cards{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px}
.cards a{display:flex;flex-direction:column;gap:.4rem;height:100%;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:1.2rem 1.25rem;text-decoration:none;color:var(--ink-2);transition:border-color .15s,transform .15s}
.cards a:hover{border-color:var(--green);transform:translateY(-2px)}
.cards strong{font:700 1.2rem/1.25 var(--serif);color:var(--ink)}
.cards span{font-size:.94rem}
.cards em{margin-top:auto;padding-top:.4rem;font-style:normal;font-weight:600;color:var(--green)}
.cards em::after{content:" \2192"}
.home-lower{margin-top:3rem}

/* footer */
.site-foot{margin-top:4rem;background:var(--ink);color:#B8C4D3;padding:2.5rem 0 1.5rem;font-size:.93rem}
.foot-cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px}
.site-foot ul{list-style:none;margin:0;padding:0}
.site-foot li{margin:.3rem 0}
.site-foot a{color:#E2E8F0;text-decoration:none}
.site-foot a:hover{text-decoration:underline;color:#fff}
.site-foot .fh{color:#8FA0B5}
.brand-s{color:#fff;font-weight:600;font-size:1.1rem;margin:0 0 .4rem}
.fine{border-top:1px solid #2A3E58;margin-top:2rem;padding-top:1rem;font-size:.85rem;color:#8FA0B5}

@media (max-width:900px){
  .calc,.layout{grid-template-columns:1fr}
  .calc{grid-template-areas:"form" "result" "pick";grid-template-rows:auto}
  .hero-grid{grid-template-columns:1fr;gap:28px}
  .result,.side{position:static}
  .foot-cols{grid-template-columns:1fr 1fr}
}
@media (max-width:600px){
  body{font-size:1rem}
  .inputs{grid-template-columns:1fr;padding:1.1rem}
  .site-head nav{width:100%;flex-wrap:wrap;padding-bottom:.5rem;position:relative}
  .menu{position:static}
  .site-head nav a,.menu summary{padding:.4rem .5rem;font-size:.9rem}
  .menu ul{left:0;right:0;min-width:0}
  .pick ul{grid-template-columns:1fr}
  .duebox ol{grid-template-columns:1fr 1fr}
  .site-head nav a{white-space:nowrap}
  .foot-cols{grid-template-columns:1fr}
  .mbar{display:flex;position:fixed;left:12px;right:12px;bottom:12px;z-index:5;justify-content:space-between;align-items:center;background:var(--green);color:#fff;text-decoration:none;border-radius:12px;padding:.75rem 1rem;box-shadow:0 8px 24px -8px rgba(0,0,0,.45);font-size:.92rem}
  .mbar:hover{color:#fff}
  .mbar strong{font-size:1.15rem;font-variant-numeric:tabular-nums}
  .site-foot{padding-bottom:5rem}
}
@media (prefers-reduced-motion:reduce){.cards a{transition:none}}