/* Inner pages: articles, single article, static pages, contact. Same system as the home page. */
.page .nav{position:fixed}
.inner{padding-top:calc(var(--nav-h) + 40px)}
.inner-head{padding-block:clamp(40px,7vw,90px) clamp(24px,3vw,40px);border-bottom:1px solid var(--line)}
.inner-head h1{font-size:var(--fs-h2);line-height:.98;max-width:18ch}
.inner-head .lede{margin-top:18px;max-width:60ch}
.inner-body{padding-block:clamp(40px,6vw,80px) clamp(80px,10vw,140px)}
.rich{max-width:72ch;display:grid;gap:18px;font-size:var(--fs-body)}
.rich h2{font-size:var(--fs-h3);margin-top:22px}
.rich h3,.rich h4{font-size:var(--fs-h4);margin-top:16px}
.rich ul,.rich ol{padding-left:22px;display:grid;gap:8px}
.rich a{color:var(--blue-ink);border-bottom:1px solid var(--line-2)}
.rich img{max-width:100%;height:auto}
.rich blockquote{border-left:2px solid var(--blue);padding-left:18px;color:var(--mute)}
.post-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:clamp(20px,3vw,40px)}
.post-card a{display:grid;gap:12px}
.post-cover{aspect-ratio:16/10;background:var(--bg-2);display:grid;place-items:center;overflow:hidden;box-shadow:inset 0 0 0 1px var(--line)}
.post-cover img{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease)}
.post-card a:hover .post-cover img{transform:scale(1.04)}
.post-card h2{font-size:var(--fs-h4);line-height:1.25}
.post-card p{color:var(--mute);font-size:var(--fs-sm)}
.post-meta{color:var(--faint);font-size:var(--fs-meta)}
.post-full{max-width:76ch;display:grid;gap:22px}
.post-hero{margin:0}.post-hero img{width:100%;height:auto}
.post-body{display:grid;gap:18px;font-size:var(--fs-body)}
.post-body h2{font-size:var(--fs-h3)}.post-body h3{font-size:var(--fs-h4)}
.post-body ul,.post-body ol{padding-left:22px;display:grid;gap:8px}
.post-body a{color:var(--blue-ink);border-bottom:1px solid var(--line-2)}
.pager{display:flex;gap:10px;margin-top:40px}
.pager a{padding:8px 14px;box-shadow:inset 0 0 0 1px var(--line-2);font-family:var(--f-mono);font-size:14px}
.pager a.on{background:var(--blue);color:#fff}
.contact-grid{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:clamp(28px,5vw,70px);align-items:start}
.contact-form form{display:grid;gap:18px;max-width:52ch}
.contact-form label{display:grid;gap:8px}
.contact-form label span{font-family:var(--f-mono);font-size:var(--fs-meta);letter-spacing:.06em;text-transform:uppercase;color:var(--mute)}
.contact-form input,.contact-form textarea{font:inherit;font-size:var(--fs-body);padding:14px 16px;border:1px solid var(--line-2);background:#fff;color:var(--paper);border-radius:0}
.contact-form input:focus,.contact-form textarea:focus{outline:2px solid var(--blue);outline-offset:1px}
.contact-form .hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.contact-form .btn{justify-self:start}
.form-note{color:var(--faint);font-size:var(--fs-meta)}
.form-ok{padding:14px 16px;background:rgba(11,95,224,.08);box-shadow:inset 0 0 0 1px var(--blue);margin-bottom:20px}
.form-err{padding:14px 16px;background:rgba(220,38,38,.08);box-shadow:inset 0 0 0 1px #DC2626;margin-bottom:20px}
.contact-side{display:grid;gap:10px;padding:clamp(20px,3vw,32px);background:var(--bg-2)}
.contact-side h2{font-size:var(--fs-h4)}
.contact-side a{color:var(--blue-ink)}
.nav-lang{display:flex;gap:2px;margin-inline:8px}
.nav-lang a{font-family:var(--f-mono);font-size:13px;letter-spacing:.06em;padding:6px 8px;color:var(--mute)}
.nav-lang a.on{color:var(--paper);box-shadow:inset 0 0 0 1px var(--line-2)}
.sheet-langs{display:flex;gap:14px;margin-top:20px}
.sheet-langs a.on{color:var(--blue-ink)}
@media (max-width:900px){.contact-grid{grid-template-columns:1fr}.inner{padding-top:calc(var(--nav-h) + 16px)}}

/* ---------- website calculator ---------- */
.calc [hidden]{display:none!important}
.calc{display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:clamp(28px,4vw,64px);align-items:start}
.calc-form{display:grid;gap:clamp(32px,4.5vw,64px);min-width:0}
.calc-group{display:grid;grid-template-columns:minmax(0,1fr);gap:18px;padding-bottom:clamp(28px,4vw,52px);border-bottom:1px solid var(--line)}
.calc-form>.calc-group:last-child{border-bottom:0;padding-bottom:0}
.calc-head{display:grid;gap:6px}
.calc-step{font-family:var(--f-mono);font-size:var(--fs-meta);letter-spacing:.14em;color:var(--blue-ink)}
.calc-group h2{font-size:var(--fs-h3);line-height:1.04;max-width:22ch}
.calc-hint{color:var(--mute);font-size:var(--fs-sm);max-width:60ch}

.calc-options{display:grid;gap:10px}
.calc-opt{display:grid;grid-template-columns:22px minmax(0,1fr) auto;align-items:start;gap:14px;
  padding:16px 18px;background:#fff;box-shadow:inset 0 0 0 1px var(--line-2);cursor:pointer;
  transition:box-shadow .25s var(--ease),transform .25s var(--ease),background-color .25s var(--ease)}
.calc-opt:hover{box-shadow:inset 0 0 0 1px var(--blue)}
.calc-opt input{position:absolute;opacity:0;width:1px;height:1px}
.calc-mark{width:20px;height:20px;margin-top:2px;box-shadow:inset 0 0 0 1px var(--line-2);background:#fff;position:relative;transition:box-shadow .2s var(--ease)}
.calc-group[data-type="radio"] .calc-mark{border-radius:50%}
.calc-mark::after{content:"";position:absolute;inset:5px;background:var(--blue);transform:scale(0);transition:transform .22s var(--ease)}
.calc-group[data-type="radio"] .calc-mark::after{border-radius:50%}
.calc-opt input:checked~.calc-mark::after{transform:scale(1)}
.calc-opt:has(input:checked){box-shadow:inset 0 0 0 2px var(--blue);background:rgba(11,95,224,.045)}
.calc-opt input:focus-visible~.calc-mark{box-shadow:0 0 0 3px rgba(11,95,224,.35),inset 0 0 0 1px var(--blue)}
.calc-opt-text{display:grid;gap:4px;min-width:0}
.calc-opt-name{font-size:var(--fs-body);line-height:1.3}
.calc-opt-hint{color:var(--mute);font-size:var(--fs-sm)}
.calc-opt-price{font-family:var(--f-mono);font-size:var(--fs-sm);color:var(--blue-ink);white-space:nowrap;padding-top:2px}

.calc-count{display:grid;gap:14px;max-width:560px}
.calc-count-read{display:flex;align-items:baseline;gap:10px}
.calc-count-num{font-family:var(--f-display);font-size:clamp(40px,calc(24px + 3vw),68px);line-height:1;font-variation-settings:"wght" 620}
.calc-count-unit{font-family:var(--f-mono);font-size:var(--fs-sm);color:var(--mute);letter-spacing:.06em;text-transform:uppercase}
.calc-count-note{font-family:var(--f-mono);font-size:var(--fs-meta);color:var(--faint)}
input[type=range][data-count]{-webkit-appearance:none;appearance:none;width:100%;height:36px;background:transparent;cursor:pointer}
input[type=range][data-count]:focus-visible{outline:2px solid var(--blue);outline-offset:4px}
input[type=range][data-count]::-webkit-slider-runnable-track{height:2px;background:linear-gradient(to right,var(--blue) var(--fill,40%),var(--line-2) var(--fill,40%))}
input[type=range][data-count]::-moz-range-track{height:2px;background:var(--line-2)}
input[type=range][data-count]::-moz-range-progress{height:2px;background:var(--blue)}
input[type=range][data-count]::-webkit-slider-thumb{-webkit-appearance:none;width:22px;height:22px;margin-top:-10px;background:#fff;box-shadow:inset 0 0 0 2px var(--blue),0 2px 10px rgba(7,10,46,.18);border-radius:50%;transition:transform .2s var(--ease)}
input[type=range][data-count]::-moz-range-thumb{width:22px;height:22px;border:0;background:#fff;box-shadow:inset 0 0 0 2px var(--blue),0 2px 10px rgba(7,10,46,.18);border-radius:50%}
input[type=range][data-count]:active::-webkit-slider-thumb{transform:scale(1.12)}

.calc-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.calc-fields label{display:grid;gap:8px}
.calc-fields label.wide{grid-column:1 / -1}
.calc-fields span{font-family:var(--f-mono);font-size:var(--fs-meta);letter-spacing:.06em;text-transform:uppercase;color:var(--mute)}
.calc-fields input,.calc-fields textarea{font:inherit;font-size:var(--fs-body);padding:14px 16px;border:1px solid var(--line-2);background:#fff;color:var(--paper);border-radius:0}
.calc-fields input:focus,.calc-fields textarea:focus{outline:2px solid var(--blue);outline-offset:1px}
.calc-order .btn{justify-self:start;margin-top:4px}
.calc .hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}

.calc-sum{position:sticky;top:calc(var(--nav-h) + 20px)}
.calc-sum-inner{display:grid;gap:16px;padding:clamp(20px,2.4vw,30px);background:var(--bg-2);box-shadow:inset 0 0 0 1px var(--line)}
.calc-sum-label{font-family:var(--f-mono);font-size:var(--fs-meta);letter-spacing:.14em;text-transform:uppercase;color:var(--mute)}
.calc-total{font-family:var(--f-display);font-size:clamp(38px,calc(22px + 2.6vw),58px);line-height:1;font-variation-settings:"wght" 660;letter-spacing:-.02em}
.calc-facts{display:grid;gap:8px;margin:0;font-size:var(--fs-sm)}
.calc-facts div{display:flex;justify-content:space-between;gap:14px;padding-bottom:8px;border-bottom:1px solid var(--line)}
.calc-facts dt{color:var(--mute)}
.calc-facts dd{margin:0;font-family:var(--f-mono)}
.calc-picked{list-style:none;margin:0;padding:0;display:grid;gap:7px;max-height:250px;overflow:auto;font-size:var(--fs-meta)}
.calc-picked li{display:flex;justify-content:space-between;gap:12px;color:var(--mute)}
.calc-picked li span:last-child{font-family:var(--f-mono);color:var(--blue-ink);white-space:nowrap}
.calc-jump{justify-self:start}
.calc-sum-note{font-size:var(--fs-meta);color:var(--faint)}

@media (max-width:1100px){
  .calc{grid-template-columns:minmax(0,1fr)}
  .calc-sum{position:sticky;top:auto;bottom:0;order:2;z-index:5;margin:0 calc(var(--gut) * -1)}
  .calc-sum-inner{border-radius:0;box-shadow:0 -10px 30px rgba(7,10,46,.12);background:#fff;
    grid-template-columns:auto 1fr;align-items:center;gap:10px 16px;padding:14px var(--gut) calc(14px + env(safe-area-inset-bottom))}
  .calc-sum-label{grid-column:1/-1;margin-bottom:-6px}
  .calc-total{font-size:clamp(30px,8vw,42px)}
  .calc-facts{grid-column:1/-1;grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}
  .calc-facts div{border-bottom:0;padding-bottom:0}
  .calc-picked,.calc-sum-note{display:none}
  .calc-order{padding-bottom:clamp(110px,20vh,170px)}
  .calc-jump{grid-column:2;justify-self:end;margin-top:-46px}
}
@media (max-width:620px){
  .calc-fields{grid-template-columns:minmax(0,1fr)}
  .calc-opt{grid-template-columns:20px minmax(0,1fr);row-gap:6px;padding:14px}
  .calc-opt-price{grid-column:2;padding-top:0}
  .calc-jump{grid-column:1/-1;justify-self:stretch;margin-top:2px;text-align:center}
  .calc-facts div{justify-content:flex-start;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  .calc-opt,.calc-mark::after,input[type=range][data-count]::-webkit-slider-thumb{transition:none}
}

/* calculator: the step rail, the wizard and the wider option lists */
.calc-steps{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:clamp(20px,3vw,36px);border-bottom:1px solid var(--line);padding-bottom:14px}
.calc-step-tab{display:flex;align-items:baseline;gap:8px;padding:8px 12px;font:inherit;color:var(--mute);cursor:pointer;
  box-shadow:inset 0 0 0 1px transparent;transition:color .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease)}
.calc-step-tab:hover{color:var(--paper);box-shadow:inset 0 0 0 1px var(--line-2)}
.calc-step-tab.on{color:#fff;background:var(--blue)}
.calc-step-tab.done{color:var(--blue-ink)}
.calc-step-n{font-family:var(--f-mono);font-size:var(--fs-meta);letter-spacing:.1em;opacity:.75}
.calc-step-t{font-size:var(--fs-sm)}
.calc-stage{display:grid;gap:clamp(32px,4.5vw,64px)}
.calc-stage[hidden]{display:none}
.calc-nav{display:flex;align-items:center;gap:16px;margin-top:clamp(24px,3vw,40px);padding-top:20px;border-top:1px solid var(--line)}
.calc-nav-pos{font-family:var(--f-mono);font-size:var(--fs-meta);color:var(--faint);margin-inline:auto}
.calc-nav .btn[disabled]{opacity:.4;pointer-events:none}
.calc-options-2{grid-template-columns:repeat(auto-fill,minmax(320px,1fr))}
.calc-tag{display:inline-block;margin-left:8px;font-family:var(--f-mono);font-size:11.5px;letter-spacing:.08em;
  text-transform:uppercase;color:var(--blue-ink);font-style:normal;vertical-align:1px}
.calc-opt-sub{display:block;font-style:normal;font-size:var(--fs-meta);color:var(--faint)}
@media (max-width:620px){
  .calc-steps{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;margin-inline:calc(var(--gut) * -1);padding-inline:var(--gut)}
  .calc-steps::-webkit-scrollbar{display:none}
  .calc-step-tab{flex:0 0 auto}
  .calc-options-2{grid-template-columns:minmax(0,1fr)}
}