/* The calculator */
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 clamp(20px, 4.5vw, 64px) 96px; }

/* welcome: one statement, three writing lines, one link */
.welcome { max-width: 440px; margin: 0 auto; text-align: center; padding-top: clamp(28px, 9vh, 96px); }
.welcome .label-tiny { display: block; margin-bottom: 22px; }
.welcome h1 { margin-bottom: 14px; }
.welcome .lead { margin: 0 auto 48px; max-width: 360px; }
.welcome form { text-align: left; }
.welcome .field { margin-bottom: 14px; }
.welcome .actions { display: flex; flex-direction: column; align-items: center; gap: 22px; margin-top: 22px; }
.welcome .link { font-size: 15px; }
.welcome .note { max-width: 330px; text-align: center; }

/* calculator head */
.head { padding: clamp(20px, 5vh, 52px) 0 clamp(28px, 5vh, 52px); text-align: center; }
.head .label-tiny { display: block; margin-bottom: 10px; }
.head .label { display: block; margin-bottom: 20px; overflow-wrap: anywhere; }
.head .caption { margin-top: 10px; }

.cols { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: clamp(40px, 7vw, 112px); align-items: start; }
@media (max-width: 900px) { .cols { grid-template-columns: 1fr; gap: 56px; } }

/* a group of controls */
.grp { border-top: 1px solid var(--rule); padding: 22px 0 6px; }
.grp-h { display: flex; align-items: baseline; gap: 14px; margin-bottom: 22px; }
.grp-h .numeral { min-width: 18px; }
.grp.again { padding: 18px 0 0; }
.grp .tools { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; flex-wrap: wrap; padding: 4px 0 18px; }

/* one control: label and typed value above a hairline slider */
.ctl { margin-bottom: 22px; }
.ctl-top { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; }
.ctl-top label { padding-top: 4px; }
.val { display: inline-flex; align-items: baseline; font-family: var(--gar); font-weight: 300; font-size: 22px; line-height: 1.25; letter-spacing: 0; border-bottom: 1px solid transparent; transition: border-color .3s; cursor: text; }
.val:hover { border-bottom-color: var(--rule); }
.val:focus-within { border-bottom-color: var(--ink); }
.val .num { font: inherit; letter-spacing: 0; background: transparent; border: 0; padding: 0; margin: 0; text-align: right; min-width: 1ch; max-width: 9ch; -webkit-appearance: none; appearance: none; font-variant-numeric: lining-nums; }
.val .num:focus { outline: none; }
.val .unit { color: var(--quiet); font-style: italic; font-weight: 400; padding-left: .22em; }
.ctl .hint { display: block; min-height: 18px; margin-top: -2px; }

.rng { -webkit-appearance: none; appearance: none; display: block; width: 100%; height: 34px; margin: 0; padding: 0; background: transparent; cursor: pointer; touch-action: pan-y; --p: 0; }
.rng:focus { outline: none; }
.rng::-webkit-slider-runnable-track { height: 34px;
  background: linear-gradient(var(--ink), var(--ink)) left center / calc(14px + (100% - 28px) * var(--p)) 2px no-repeat, linear-gradient(var(--rule), var(--rule)) left center / 100% 1px no-repeat; }
.rng::-webkit-slider-thumb { -webkit-appearance: none; appearance: none; width: 28px; height: 28px; margin-top: 3px; border: 0; cursor: grab;
  background: linear-gradient(var(--ground), var(--ground)) center / 12px 12px no-repeat, linear-gradient(var(--ink), var(--ink)) center / 14px 14px no-repeat;
  transition: transform .35s var(--spring); }
.rng:hover::-webkit-slider-thumb { transform: scale(1.14); }
.rng:active::-webkit-slider-thumb, .rng.drag::-webkit-slider-thumb { transform: scale(1.36); cursor: grabbing; background: linear-gradient(var(--ink), var(--ink)) center / 14px 14px no-repeat; }
.rng:focus-visible::-webkit-slider-thumb { outline: 1px solid var(--ink); outline-offset: -3px; }
.rng::-moz-range-track { height: 1px; background: var(--rule); }
.rng::-moz-range-progress { height: 2px; background: var(--ink); }
.rng::-moz-range-thumb { width: 12px; height: 12px; border: 1px solid var(--ink); border-radius: 0; background: var(--ground); cursor: grab; transition: transform .35s var(--spring); }
.rng:active::-moz-range-thumb { transform: scale(1.36); background: var(--ink); }
.rng:focus-visible::-moz-range-thumb { outline: 1px solid var(--ink); outline-offset: 3px; }

/* results */
.res { position: sticky; top: 28px; }
@media (max-width: 900px) { .res { position: static; } }
.res-h { display: block; text-align: center; margin-bottom: 26px; }
.res .headline { text-align: center; max-width: 440px; margin: 0 auto; min-height: 56px; }
.res .headline .fig { font-variant-numeric: lining-nums tabular-nums; }
.res .sub { text-align: center; margin-top: 8px; min-height: 22px; }

/* five years as one hairline, with the break-even point */
.line { position: relative; margin: 58px 0 56px; height: 44px; --at: 0; }
.line .axis { position: absolute; left: 0; right: 0; top: 22px; height: 1px; background: var(--rule); }
.line .fill { position: absolute; left: 0; top: 21.5px; height: 2px; width: 100%; background: var(--ink); transform-origin: left; transform: scaleX(var(--at)); transition: transform .9s var(--glide); }
.line .yr { position: absolute; top: 18px; width: 1px; height: 9px; background: var(--write); }
.line .yr b { position: absolute; top: 14px; left: 50%; transform: translateX(-50%); font: 300 14px var(--gar); color: var(--quiet); letter-spacing: 0; white-space: nowrap; }
.line .yr.first b { left: 0; transform: none; } .line .yr.last b { left: auto; right: 0; transform: none; }
.line .pin { position: absolute; top: 0; left: calc(var(--at) * 100%); transition: left .9s var(--glide), opacity .4s; }
.line .pin i { position: absolute; left: -4px; top: 18px; width: 9px; height: 9px; background: var(--detail); display: block; }
.line .pin span { position: absolute; bottom: 30px; left: 0; transform: translateX(-50%); white-space: nowrap; font-size: 9px; letter-spacing: .36em; margin-right: -.36em; color: var(--quiet); transition: transform .9s var(--glide); }
.line.start .pin span { transform: none; } .line.end .pin span { transform: translateX(-100%); }
.line.none .pin { opacity: 0; }

.three { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; margin-bottom: 44px; }
.three .label-tiny { display: block; color: var(--quiet); margin-bottom: 6px; font-size: 9px; letter-spacing: .34em; }
.three .statement { font-variant-numeric: lining-nums tabular-nums; }
.three .statement em { display: block; font-size: 17px; color: var(--quiet); }
@media (max-width: 560px) { .three { grid-template-columns: 1fr; gap: 22px; text-align: center; } }

.res table.hair { margin-bottom: 40px; }
.res .tcap { display: block; margin-bottom: 14px; }
.res .note { margin: -18px 0 36px; }
.res .actions { display: flex; align-items: baseline; justify-content: space-between; gap: 18px 28px; flex-wrap: wrap; border-top: 1px solid var(--rule); padding-top: 26px; }
@media (max-width: 420px) { table.hair td.n { font-size: 15px; } table.hair td.k { letter-spacing: .22em; } }

/* phone: a slim bar keeps the answer in view while the sliders move */
.bar { position: fixed; left: 0; right: 0; bottom: 0; z-index: 20; background: var(--ground); border-top: 1px solid var(--rule); padding: 12px clamp(20px, 4.5vw, 64px) calc(12px + env(safe-area-inset-bottom)); display: none; justify-content: space-between; align-items: baseline; gap: 16px;
  transform: translateY(100%); transition: transform .6s var(--glide); width: 100%; text-align: left; }
.bar.on { transform: none; }
.bar .statement { font-size: 19px; white-space: nowrap; font-variant-numeric: lining-nums tabular-nums; }
.bar .label-tiny { color: var(--quiet); font-size: 9px; white-space: nowrap; }
@media (max-width: 900px) { .bar { display: flex; } }

/* footer */
.foot { border-top: 1px solid var(--ink); margin-top: 88px; padding: 30px 0 0; display: grid; grid-template-columns: 1fr auto 1fr; align-items: end; gap: 16px; }
.foot .mid { text-align: center; }
.foot .mid .label-sm { display: block; margin-bottom: 4px; }
.foot a { text-decoration: none; }
.foot .r { text-align: right; }
@media (max-width: 640px) { .foot { grid-template-columns: 1fr; text-align: center; justify-items: center; } .foot .r { text-align: center; } .foot .mid { order: -1; } }