/*
  Copyright (c) 2025 Novadette. All rights reserved.
  See LICENSE.txt for terms.
  Shared layout and components for Novadette calculator pages.
*/
:root{
  --bg:#F5F6FA;--white:#FFFFFF;--border:#E3E6EF;--border-s:#C8CCDB;
  --ink:#0E1320;--ink2:#3A4060;--ink3:#7C83A0;--ink4:#B0B6CC;
  --red:#DC2626;--red-l:#FEF2F2;--red-b:#FECACA;
  --green:#16A34A;--amber:#B45309;--purple:#7C3AED;--cyan:#0891B2;
  --font-ui:'DM Sans',sans-serif;--font-s:'DM Serif Display',serif;--font-m:'DM Mono',monospace;
  --sh-s:0 1px 3px rgba(14,19,32,.07),0 1px 2px rgba(14,19,32,.04);
  --sh-m:0 4px 16px rgba(14,19,32,.09),0 1px 4px rgba(14,19,32,.05);
  --c:#1E40AF;--cm:#2563EB;--l:#EFF6FF;--p:#DBEAFE;--b:#BFDBFE;
}
body.disc-physics{--c:#5B21B6;--cm:#7C3AED;--l:#F5F3FF;--p:#EDE9FE;--b:#DDD6FE}
body.disc-chemistry{--c:#0E7490;--cm:#06B6D4;--l:#ECFEFF;--p:#CFFAFE;--b:#A5F3FC}
body.disc-biology{--c:#166534;--cm:#16A34A;--l:#F0FDF4;--p:#DCFCE7;--b:#BBF7D0}
body.disc-engineering{--c:#9A3412;--cm:#EA580C;--l:#FFF7ED;--p:#FFEDD5;--b:#FED7AA}
body.disc-economics{--c:#8A6914;--cm:#C49A24;--l:#FDF9EC;--p:#F8EFD2;--b:#EEDCA2}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{background:var(--bg);color:var(--ink);font-family:var(--font-ui);font-size:15px;line-height:1.6;min-height:100vh}
a{color:inherit;text-decoration:none}
button{cursor:pointer;font-family:inherit;border:none;background:none}
code{background:var(--bg);border:1px solid var(--border);padding:1px 5px;border-radius:4px;font-family:var(--font-m);font-size:.82em;color:var(--ink2)}

/* ── Header ── */
header{background:var(--white);border-bottom:1px solid var(--border);box-shadow:var(--sh-s);position:sticky;top:0;z-index:200}
.h-top{display:flex;align-items:center;justify-content:space-between;padding:0 36px;height:62px;max-width:1440px;margin:0 auto}
.logo{display:flex;align-items:center;gap:11px}
.logo-mark{width:36px;height:36px;background:linear-gradient(140deg,#1D4ED8,#60A5FA);border-radius:9px;display:flex;align-items:center;justify-content:center;color:#fff;font-family:var(--font-m);font-size:.88rem;font-weight:500;box-shadow:0 2px 8px rgba(37,99,235,.28)}
.logo-wm{display:flex;flex-direction:column;gap:1px}
.logo-name{font-family:var(--font-s);font-size:1.22rem;line-height:1;color:var(--ink);letter-spacing:-.01em}
.logo-sub{font-size:.67rem;color:var(--ink3);letter-spacing:.04em}
.h-right{display:flex;align-items:center;gap:22px}
.h-motto{font-size:.82rem;color:var(--ink3);font-style:italic;font-family:var(--font-s)}
.h-link{font-size:.85rem;color:var(--ink2);font-weight:500;transition:color .15s}
.h-link:hover{color:var(--cm)}
.tabs-wrap{border-top:1px solid var(--border);background:var(--white)}
.tabs{display:flex;align-items:stretch;max-width:1440px;margin:0 auto;padding:0 36px}
.tab{display:flex;align-items:center;gap:7px;padding:0 20px;height:44px;font-size:.85rem;font-weight:500;color:var(--ink3);border-bottom:2.5px solid transparent;transition:color .15s,border-color .15s,background .15s;white-space:nowrap}
.tab:hover{color:var(--ink2);background:var(--bg)}
.tab.active{color:var(--c);border-bottom-color:var(--c)}
.badge{font-size:.58rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;background:var(--bg);border:1px solid var(--border);color:var(--ink4);padding:2px 5px;border-radius:4px}
footer{background:var(--white);border-top:1px solid var(--border);padding:24px 36px;text-align:center;font-size:.78rem;color:var(--ink3);font-style:italic;font-family:var(--font-s)}

/* ── Page layout ── */
main{max-width:1200px;margin:0 auto;padding:32px 36px 60px}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:6px;font-size:.78rem;color:var(--ink3);margin-bottom:24px}
.crumb a{color:var(--ink3);transition:color .15s}
.crumb a:hover{color:var(--cm)}
.crumb .sep{opacity:.4}
.crumb .sec{color:var(--ink2);font-weight:500}
.crumb .cur{color:var(--c);font-weight:600}
.layout{display:grid;grid-template-columns:minmax(0,1fr) 460px;gap:24px;align-items:start}
.col-l{display:flex;flex-direction:column;gap:20px;min-width:0}
.col-r{display:flex;flex-direction:column;gap:16px;min-width:0}

/* ── Shared atoms ── */
.katex{font-size:1.05em}
.formula-box{background:var(--l);border:1px solid var(--b);border-left:3px solid var(--c);border-radius:8px;padding:10px 16px;display:inline-flex;align-items:center;max-width:100%;min-height:42px;overflow-x:auto;overflow-y:hidden}

/* ── Calculator card ── */
.card{background:var(--white);border:1px solid var(--border);border-radius:16px;box-shadow:var(--sh-m);overflow:hidden}
.ch{padding:24px 28px;border-bottom:1px solid var(--border)}
.disc-badge{display:inline-flex;align-items:center;gap:6px;font-size:.7rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;background:var(--p);color:var(--c);border:1px solid var(--b);padding:3px 9px;border-radius:5px;margin-bottom:14px}
h1{font-family:var(--font-s);font-weight:400;font-size:1.9rem;color:var(--ink);margin-bottom:8px;line-height:1.1}
.lede{font-size:.9rem;color:var(--ink2);line-height:1.65;max-width:540px;margin-bottom:16px}
.tags{display:flex;gap:5px;flex-wrap:wrap;margin-top:14px}
.tag{font-size:.67rem;font-weight:500;padding:3px 7px;border-radius:4px;border:1px solid var(--b);background:var(--p);color:var(--c)}
.inputs{padding:24px 28px 0}
.sec-label{font-size:.7rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--ink3);margin-bottom:14px}
.field-row{display:flex;flex-direction:column;gap:5px;margin-bottom:14px;min-width:0}
.field-row label,.field-label{font-size:.78rem;font-weight:500;color:var(--ink2)}
.field-hint{font-size:.7rem;color:var(--ink4)}
.field-wrap{display:flex;align-items:stretch;min-width:0}
.grid2,.grid3{display:grid;grid-template-columns:minmax(0,1fr);gap:0}
.label-line{display:flex;align-items:center;justify-content:space-between;gap:8px}
.solve-btn{font-size:.66rem;font-weight:600;letter-spacing:.03em;padding:2px 10px;border-radius:999px;border:1px solid var(--border-s);background:var(--white);color:var(--ink3);transition:background .15s,color .15s,border-color .15s;flex-shrink:0}
.solve-btn:hover{border-color:var(--cm);color:var(--c)}
.solve-btn.on{background:var(--c);border-color:var(--c);color:#fff}
/* Calculated (read-only) fields: no fill, dashed outline, grey numbers */
.calc-input.solved{background:var(--hx-F7F8FB,#F7F8FB);border:1px dashed var(--border-s);color:var(--ink3);font-weight:500;cursor:default}
.calc-input.solved:focus{box-shadow:none;border-color:var(--border-s)}
.field-wrap:has(.calc-input.solved) select.unit-sel,.field-wrap:has(.calc-input.solved) .unit{background-color:var(--hx-F7F8FB,#F7F8FB);border-style:dashed;border-left-style:none;color:var(--ink3)}
.solve-hint{font-size:.74rem;color:var(--ink3);background:var(--bg);border:1px dashed var(--border-s);border-radius:7px;padding:7px 11px;margin:-4px 0 14px}
.solve-hint strong{color:var(--c)}
.calc-input{flex:1;min-width:0;width:100%;background:var(--bg);border:1px solid var(--border-s);border-radius:7px;padding:9px 12px;font-family:var(--font-m);font-size:.875rem;color:var(--ink);outline:none;transition:border-color .15s,box-shadow .15s,background .15s}
.calc-input:focus{border-color:var(--cm);box-shadow:0 0 0 3px var(--p)}
.calc-input.error{border-color:var(--red)!important;background:var(--red-l)!important;box-shadow:0 0 0 3px var(--red-b)!important}
.calc-input.has-unit{border-radius:7px 0 0 7px}
textarea.calc-input{resize:vertical;min-height:64px;line-height:1.5}
select.calc-input,select.unit-sel{appearance:none;-webkit-appearance:none;cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%237C83A0' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 9px center;padding-right:28px}
.unit{font-size:.72rem;color:var(--ink3);background:var(--border);padding:9px 10px;border:1px solid var(--border-s);border-left:none;border-radius:0 7px 7px 0;white-space:nowrap;display:flex;align-items:center}
select.unit-sel{font-family:var(--font-ui);font-size:.72rem;color:var(--ink2);background-color:var(--border);border:1px solid var(--border-s);border-left:none;border-radius:0 7px 7px 0;padding-left:9px;outline:none;min-width:64px}
.seg{display:flex;gap:3px;background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:3px;margin-bottom:14px;flex-wrap:wrap}
.seg button{flex:1;padding:7px 8px;border-radius:6px;font-size:.78rem;font-weight:500;color:var(--ink3);transition:background .15s,color .15s,box-shadow .15s;white-space:nowrap}
.seg button:hover{color:var(--ink2)}
.seg button.on{background:var(--white);color:var(--c);box-shadow:var(--sh-s);font-weight:600}
.chips{display:flex;gap:6px;flex-wrap:wrap;margin:-6px 0 14px}
.chip{font-size:.72rem;font-weight:500;padding:4px 10px;border-radius:999px;border:1px solid var(--border);background:var(--white);color:var(--ink2);transition:background .15s,color .15s,border-color .15s}
.chip:hover,.chip.on{border-color:var(--b);background:var(--l);color:var(--c)}
.calc-btn{background:var(--c);color:#fff;border-radius:8px;padding:11px;width:100%;font-size:.88rem;font-weight:600;margin-top:4px;transition:opacity .15s,transform .1s}
.calc-btn:hover{opacity:.87;transform:translateY(-1px)}
.calc-btn:active{transform:translateY(0)}
.result-wrap{padding:20px 28px 28px}
.result{background:var(--l);border:1px solid var(--b);border-radius:10px;padding:18px 20px}
.res-label{font-size:.7rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--ink3);margin-bottom:8px}
#res-latex{min-height:2.4rem;display:flex;align-items:center;margin-bottom:6px;overflow-x:auto;overflow-y:hidden}
#res-val{font-size:.82rem;color:var(--ink3);font-family:var(--font-m);word-break:break-word}
#res-val.err{color:var(--red)}
.res-grid{display:none;flex-direction:column;margin-top:12px;background:var(--white);border:1px solid var(--b);border-radius:8px;overflow:hidden}
.res-tile{display:flex;align-items:baseline;justify-content:space-between;gap:16px;padding:8px 14px;border-bottom:1px solid var(--border);min-width:0}
.res-tile:last-child{border-bottom:none}
.res-k{font-size:.8rem;font-weight:500;color:var(--ink2);flex-shrink:0}
.res-vw{text-align:right;min-width:0;overflow-wrap:anywhere}
.res-v{display:inline;font-family:var(--font-m);font-size:.88rem;color:var(--c);font-weight:500}
.res-v .katex{font-size:1em}
.res-u{display:inline;font-size:.74rem;color:var(--ink3);margin-left:5px}

/* ── Hover info next to "Inputs" ── */
.info-tip{position:relative;display:inline-flex;vertical-align:middle;margin-left:7px;cursor:help;outline:none}
.info-tip .ico{width:16px;height:16px;border-radius:50%;border:1px solid var(--border-s);background:var(--white);color:var(--ink3);font-size:.64rem;font-weight:700;font-family:var(--font-s);font-style:italic;letter-spacing:0;text-transform:none;display:flex;align-items:center;justify-content:center;transition:border-color .15s,color .15s}
.info-tip:hover .ico,.info-tip:focus .ico{border-color:var(--cm);color:var(--c)}
.info-tip .tip{display:none;position:absolute;left:-8px;top:calc(100% + 8px);width:320px;max-width:78vw;background:var(--ink);color:#fff;font-size:.76rem;font-weight:400;letter-spacing:0;text-transform:none;line-height:1.55;padding:10px 13px;border-radius:8px;z-index:60;box-shadow:var(--sh-m)}
.info-tip .tip::before{content:'';position:absolute;top:-6px;left:12px;border-left:6px solid transparent;border-right:6px solid transparent;border-bottom:6px solid var(--ink)}
.info-tip:hover .tip,.info-tip:focus .tip{display:block}
.info-tip .tip .solve-hint{background:none;border:none;padding:0;margin:0;color:inherit;font-size:inherit}
.info-tip .tip .solve-hint + .solve-hint{margin-top:6px}
.info-tip .tip strong,.info-tip .tip em{color:#fff}

/* ── Collapsible explanation panel ── */
.panel.collapsible .panel-head{cursor:pointer;user-select:none;transition:background .15s}
.panel.collapsible .panel-head:hover{background:var(--bg)}
.panel.collapsible .chev{transition:transform .2s;color:var(--ink4);flex-shrink:0}
.panel.collapsible.open .chev{transform:rotate(180deg)}
.panel.collapsible:not(.open) .panel-head{border-bottom-color:transparent}
.panel.collapsible:not(.open) > :not(.panel-head){display:none}

/* ── Group of fields that are linked by one formula ── */
.field-group{background:var(--hx-EEF0F6,#EEF0F6);border-radius:10px;padding:12px 14px 1px;margin-bottom:14px}
.field-group .calc-input:not(.solved):not(.error){background:var(--white)}
/* Solver with hide: the solved field folds away and reappears in the result header */
.solve-hide .field-row{transition:opacity .25s,transform .3s,max-height .3s,margin .3s}
.solve-hide .field-row.is-hidden{opacity:0;transform:translateY(18px);max-height:0;margin-bottom:0;overflow:hidden;pointer-events:none}
/* Calculate button sits under the result; the result follows the inputs closely */
.result-wrap:has(> .calc-btn){padding-top:0}
.inputs:has(+ .result-wrap > .calc-btn) > :last-child{margin-bottom:14px}
.res-solving-item{display:flex;align-items:center;gap:7px}
.res-solving-item + .res-solving-item{padding-left:12px;border-left:1px solid var(--b)}
.result-wrap > .calc-btn{margin-top:14px}
.result.res-flash{animation:resFlash .7s ease}
@keyframes resFlash{0%{box-shadow:0 0 0 0 var(--b)}35%{box-shadow:0 0 0 5px var(--b)}100%{box-shadow:0 0 0 0 var(--b)}}
.res-head{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;margin-bottom:8px}
.res-head .res-label{margin-bottom:0}
.res-solving{display:flex;align-items:center;flex-wrap:wrap;gap:6px 12px;font-size:.74rem;color:var(--ink3)}
.res-solving select.unit-sel{border-left:1px solid var(--border-s);border-radius:6px;padding:4px 26px 4px 8px;min-width:0;background-color:var(--white);background-position:right 8px center}
.res-extra{margin-top:12px;overflow-x:auto}
.note{font-size:.74rem;color:var(--ink3);line-height:1.55;margin-top:10px}

/* ── Matrix input ── */
.matrix{display:inline-grid;gap:6px;padding:8px 12px;border-left:2px solid var(--ink2);border-right:2px solid var(--ink2);border-radius:6px;margin-bottom:14px;max-width:100%;overflow-x:auto}
.matrix input{width:64px;text-align:center;padding:7px 4px}

/* ── Side panels ── */
.panel{background:var(--white);border:1px solid var(--border);border-radius:14px;box-shadow:var(--sh-s);overflow:hidden}
.panel-head{padding:11px 16px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:8px;color:var(--ink3)}
.col-l .panel-head{padding:11px 20px}
.panel-head h3{font-size:.78rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--ink3);flex:1}
.panel-badge{font-family:var(--font-m);font-size:.72rem;background:var(--p);color:var(--c);border:1px solid var(--b);padding:2px 8px;border-radius:5px;white-space:nowrap}
.panel-note{margin-left:auto;font-size:.68rem;color:var(--ink4)}
.info{padding:16px 20px;display:flex;flex-direction:column;gap:10px;font-size:.85rem;color:var(--ink2);line-height:1.7}
.info strong{color:var(--ink)}
.facts{display:grid;grid-template-columns:1fr 1fr;gap:6px;background:var(--bg);border-radius:8px;padding:12px 14px;border:1px solid var(--border)}
.fact{display:flex;align-items:baseline;gap:8px}
.fact-k{font-weight:700;font-size:.78rem;min-width:72px}
.graph-body{padding:8px 10px 6px;min-height:200px}
.graph-ph{min-height:200px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;padding:20px;text-align:center;color:var(--ink4);font-size:.75rem;line-height:1.5}
.legend{display:flex;flex-wrap:wrap;padding:8px 14px;border-top:1px solid var(--border);gap:6px 16px;background:var(--bg)}
.legend-item{display:flex;align-items:center;gap:6px;font-size:.72rem;color:var(--ink2)}
.legend-dot{width:10px;height:3px;border-radius:2px;flex-shrink:0}
.legend-sq{width:12px;height:10px;border-radius:2px;flex-shrink:0}
.table-wrap{overflow-x:auto}
.ref-table{width:100%;border-collapse:collapse;font-size:.78rem}
.ref-table th{padding:8px 14px;text-align:left;font-size:.67rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--ink3);background:var(--bg);border-bottom:1px solid var(--border)}
.ref-table td{padding:8px 14px;vertical-align:middle;border-bottom:1px solid var(--border);color:var(--ink2)}
.ref-table tbody tr:nth-child(even) td{background:var(--bg)}
.ref-table tbody tr:last-child td{border-bottom:none}
.ref-table .hl{color:var(--cm)}
.ref-table .num{font-family:var(--font-m);font-size:.76rem}
.result .ref-table{background:var(--white);border:1px solid var(--b);border-radius:8px;overflow:hidden;border-collapse:separate;border-spacing:0}
.result .ref-table th{text-transform:none;letter-spacing:.02em;font-size:.72rem}
.methods{padding:14px 16px;display:flex;flex-direction:column;gap:14px;font-size:.8rem;color:var(--ink2);line-height:1.65}
.m-title{font-size:.7rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;margin-bottom:6px}
.m-formula{background:var(--bg);border:1px solid var(--border);border-left:3px solid;border-radius:7px;padding:9px 13px;margin-bottom:7px;overflow-x:auto;overflow-y:hidden}
.methods p{font-size:.77rem}
.m-example{margin-top:6px;background:var(--bg);border:1px solid var(--border);border-radius:7px;padding:8px 13px;font-size:.75rem;color:var(--ink3);overflow-x:auto;overflow-y:hidden}
.m-example strong{color:var(--ink2)}
.divider{border-top:1px solid var(--border)}
.c1{color:var(--cm)}.c2{color:var(--purple)}.c3{color:var(--cyan)}
.b1{border-left-color:var(--cm)!important}.b2{border-left-color:var(--purple)!important}.b3{border-left-color:var(--cyan)!important}
.nav{background:var(--white);border:1px solid var(--border);border-radius:12px;padding:14px 16px;box-shadow:var(--sh-s)}
.nav-title{font-size:.68rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--ink3);margin-bottom:10px}
.nav-list{display:flex;flex-direction:column;gap:7px}
.rel-btn{display:block;padding:9px 13px;border-radius:7px;font-size:.82rem;font-weight:500;color:var(--ink2);background:var(--bg);border:1px solid var(--border);transition:background .15s,color .15s,border-color .15s}
.rel-btn:hover{background:var(--l);color:var(--c);border-color:var(--b)}
.rel-btn.all{margin-top:4px;border-style:dashed;text-align:center}
.diagram{display:block;width:100%;height:auto}

/* ── Variant tabs: folder tabs on top of the calculator card ── */
.card-stack{display:flex;flex-direction:column}
.vtabs{display:flex;align-items:flex-end;gap:4px;height:40px;padding:0 16px;position:relative;z-index:1;margin-bottom:-1px;overflow-x:auto;overflow-y:hidden;scrollbar-width:none}
.vtabs::-webkit-scrollbar{display:none}
.vtab{display:flex;align-items:center;height:36px;padding:0 16px;margin-bottom:1px;font-size:.8rem;font-weight:500;color:var(--ink3);background:var(--bg);border:1px solid var(--border);border-bottom:none;border-radius:10px 10px 0 0;white-space:nowrap;transition:color .15s,background .15s}
.vtab:hover{color:var(--c);background:var(--l)}
.vtab.on{height:40px;margin-bottom:0;background:var(--white);color:var(--c);font-weight:600;box-shadow:inset 0 2px 0 var(--cm)}
/* The right column starts level with the card, below the tabs (40px minus the 1px overlap) */
.layout:has(.vtabs) > .col-r{margin-top:39px}
/* Result box in the right column, under the chart */
.col-r > .result{box-shadow:var(--sh-s)}
.group-title{font-size:.68rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--ink3);margin-bottom:10px}

/* ── Sources & Verification panel ── */
.src-h{font-size:.68rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--ink3);margin-top:6px}
.refs{margin:0 0 0 18px;display:flex;flex-direction:column;gap:6px;font-size:.8rem;line-height:1.55}
.refs em{color:var(--ink);font-style:italic}
.refs .ch-note{color:var(--ink3)}
.ref-table td.vf-ok{color:var(--green);font-weight:700}
.info .ref-table{font-size:.76rem}

/* ── Play bar under an animated chart ── */
.playbar{display:flex;align-items:center;gap:10px;padding:8px 14px;border-top:1px solid var(--border)}
.play-btn{font-size:.74rem;font-weight:600;color:var(--c);background:var(--l);border:1px solid var(--b);border-radius:6px;padding:5px 10px;min-width:82px;white-space:nowrap;transition:background .15s}
.play-btn:hover{background:var(--p)}
.playbar input[type=range]{flex:1;min-width:0;accent-color:var(--cm)}
.play-t{font-family:var(--font-m);font-size:.72rem;color:var(--ink3);min-width:78px;text-align:right}
.graph-body.can-drag{touch-action:none;cursor:crosshair}

/* ── Responsive ── */
/* One column: the two columns dissolve into a single list, ordered as
   inputs -> result -> graph -> explanation, reference and links */
@media(max-width:1020px){
  .layout{display:flex;flex-direction:column;align-items:stretch;gap:16px}
  .layout > * > *{min-width:0}
  .col-l,.col-r{display:contents}
  .col-l > .card,.col-l > .card-stack{order:1}
  .col-r > .result{order:2}
  .col-r > .panel:has(.graph-body){order:3}
  .col-l > .panel,.col-r > .panel:not(:has(.graph-body)),.col-r > .nav{order:4}
}
@media(max-width:640px){
  .h-top{padding:0 16px}.h-motto{display:none}
  .tabs{padding:0 8px;overflow-x:auto}.tab{padding:0 12px}
  main{padding:20px 16px 48px}
  .ch,.inputs,.result-wrap{padding-left:18px;padding-right:18px}
  .facts,.grid3{grid-template-columns:1fr}
  .vtabs{padding:0 10px}.vtab{padding:0 12px}
}