styles.css

  :root{
    /* light, cool-gray theme */
    --bg:#e8ecf1; --panel:#ffffff; --panel2:#f2f5f8; --panel3:#eaeff4;
    --line:#dde3ea; --line2:#c8d2dc;
    --ink:#1d2733; --muted:#5c6a79; --faint:#8a96a4;
    --accent:#f4cf17;            /* Rivian compass yellow — used as fills w/ dark text */
    --accent-deep:#7a6a00;
    --sel:#1f7f8c;               /* cool teal selection */
    --sel-bg:#e6f5f7;
    --good:#1f9d57; --warn:#b5790a; --bad:#d6453f;
    --r:14px;
    --sh:0 1px 2px rgba(20,32,46,.06), 0 3px 10px rgba(20,32,46,.05);
    --sh2:0 2px 6px rgba(20,32,46,.08), 0 10px 24px rgba(20,32,46,.07);
  }
  *{box-sizing:border-box}
  html,body{margin:0;background:var(--bg);color:var(--ink);
    font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
    -webkit-font-smoothing:antialiased;font-size:15px;line-height:1.5}
  a{color:var(--sel);text-decoration:none}
  a:hover{text-decoration:underline}
  .wrap{max-width:1180px;margin:0 auto;padding:26px 20px 90px}
  header.top{display:flex;flex-wrap:wrap;align-items:flex-end;gap:14px;justify-content:space-between;margin-bottom:4px}
  h1{font-size:25px;margin:0;letter-spacing:-.3px;font-weight:700}
  h1 .y{background:var(--accent);color:#1a1700;padding:0 7px;border-radius:6px}
  /* vehicle switch (R2 / R1S) — segmented control, mirrors .tabs; only shown with ≥2 live vehicles */
  .vehtoggle{display:flex;gap:5px;background:var(--panel3);border:1px solid var(--line);padding:4px;border-radius:11px}
  .vehtoggle[hidden]{display:none}   /* the display:flex above would otherwise beat the hidden attribute — with one live vehicle the empty pill must fully vanish */
  .vehbtn{font-family:inherit;font-size:12.5px;font-weight:700;letter-spacing:.01em;border:0;background:transparent;color:var(--muted);border-radius:8px;padding:5px 15px;cursor:pointer;transition:.12s}
  .vehbtn:hover{color:var(--ink)}
  .vehbtn.on{color:var(--ink);background:var(--panel);box-shadow:var(--sh)}
  /* draft vehicles only appear in ?preview mode — badge them as unverified */
  .vehbtn .vehdraft{margin-left:6px;font-size:9px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);border:1px solid var(--line2);border-radius:4px;padding:0 4px;vertical-align:1px}
  .sub{color:var(--muted);font-size:13.5px;margin-top:6px;max-width:660px}
  .topright{display:flex;gap:8px;align-items:center;flex-wrap:wrap;justify-content:flex-end}
  .pill{display:inline-block;font-size:11.5px;border:1px solid var(--line2);border-radius:20px;padding:4px 11px;color:var(--muted);background:var(--panel)}
  .linkbtn{font-size:12.5px;font-weight:600;border:1px solid var(--line2);background:var(--panel);border-radius:20px;padding:5px 12px;color:var(--ink)}
  .linkbtn:hover{border-color:var(--sel);text-decoration:none}

  .tabbar{display:flex;align-items:center;gap:12px;margin:22px 0 18px;flex-wrap:wrap}
  .tabs{display:flex;gap:6px;background:var(--panel3);border:1px solid var(--line);padding:5px;border-radius:12px;width:fit-content}
  .tabaux{display:flex;gap:16px;align-items:center;margin-left:auto}
  .tablink{font-size:13px;font-weight:600;color:var(--muted);background:none;border:0;cursor:pointer;padding:4px 2px;text-decoration:none;white-space:nowrap}
  .tablink:hover{color:var(--ink)}
  .tab{padding:9px 16px;cursor:pointer;color:var(--muted);font-weight:600;font-size:14px;border-radius:8px;user-select:none}
  .tab.active{color:var(--ink);background:var(--panel);box-shadow:var(--sh)}
  .tab:hover{color:var(--ink)}
  .view{display:none}
  .view.active{display:block}
  .tablink.active{color:var(--ink)}
  /* Community flyout (desktop) — anchors a .tabmore-menu panel under its trigger */
  .tabflyout{position:relative}
  /* overflow (⋯) menu — hidden on desktop; reveals the aux links on phones */
  .tabmore{position:relative;margin-left:auto;display:none}
  .tabmore-btn{font-size:20px;line-height:1;font-weight:700;color:var(--muted);background:none;border:0;cursor:pointer;padding:2px 8px;border-radius:8px}
  .tabmore-btn:hover,.tabmore-btn.active{color:var(--ink)}
  .tabmore-menu{position:absolute;right:0;top:calc(100% + 6px);z-index:30;display:flex;flex-direction:column;gap:2px;min-width:210px;padding:6px;background:var(--panel);border:1px solid var(--line);border-radius:12px;box-shadow:var(--sh2)}
  .tabmore-menu[hidden]{display:none}
  .tabmore-item{display:block;text-align:left;font-size:13px;font-weight:600;color:var(--muted);background:none;border:0;cursor:pointer;padding:9px 12px;border-radius:8px;text-decoration:none;white-space:nowrap;font-family:inherit}
  .tabmore-item:hover{color:var(--ink);background:var(--panel2)}
  .menuicon{width:15px;height:15px;vertical-align:-3px;margin-right:8px;opacity:.75}

  /* changelog (secondary view) */
  .changelog{max-width:760px}
  .cl-updated{font-size:12px;color:var(--faint);margin:-4px 0 18px}
  .cl-entry{padding:16px 0;border-top:1px solid var(--line)}
  .cl-entry:first-of-type{border-top:none;padding-top:0}
  .cl-head{display:flex;align-items:center;gap:10px;margin-bottom:8px}
  .cl-date{font-weight:700;font-size:14px;color:var(--ink)}
  .cl-tag{display:inline-block;font-size:10px;font-weight:600;line-height:1.5;letter-spacing:.03em;text-transform:uppercase;border-radius:4px;padding:0 6px;margin-right:7px;color:var(--sel);background:var(--sel-bg);border:1px solid var(--line2);vertical-align:1px}
  .cl-list{margin:0;padding-left:18px}
  .cl-list li{font-size:13px;color:var(--muted);line-height:1.6;margin:4px 0}
  .cl-foot{margin:20px 0 0;padding-top:14px;border-top:1px solid var(--line);font-size:13px}

  .grid{display:grid;grid-template-columns:1fr 350px;gap:22px;align-items:start}
  @media(max-width:920px){.grid{grid-template-columns:1fr}}
  .panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:20px;box-shadow:var(--sh)}
  .panel h2{font-size:12px;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);margin:0 0 14px;font-weight:700}

  /* trims */
  .trimrow{display:flex;gap:11px;flex-wrap:wrap}
  .trim{flex:1 1 150px;background:var(--panel2);border:1px solid var(--line);border-radius:12px;padding:13px;cursor:pointer;transition:.12s;position:relative}
  .trim:hover{border-color:var(--line2);transform:translateY(-1px)}
  .trim.sel{border-color:var(--sel);box-shadow:0 0 0 1px var(--sel) inset;background:var(--sel-bg)}
  .trim .tn{font-weight:700;font-size:15px}
  .trim .tp{color:var(--ink);font-weight:700;margin-top:2px}
  .trim .ts{color:var(--muted);font-size:12px;margin-top:7px;line-height:1.45}
  .trim .av{display:inline-block;margin-top:8px;font-size:10.5px;border-radius:20px;padding:1px 8px;border:1px solid var(--line2);color:var(--faint);background:var(--panel)}
  .trim .check{position:absolute;top:10px;right:10px;width:19px;height:19px;border-radius:50%;background:var(--sel);color:#fff;display:none;align-items:center;justify-content:center;font-size:12px}
  .trim.sel .check{display:flex}

  /* hero render */
  .hero{background:linear-gradient(180deg,#f7f9fb,#e9eef3);border:1px solid var(--line);border-radius:12px;
    margin:16px 0;min-height:150px;display:flex;align-items:center;justify-content:center;overflow:hidden;position:relative}
  .hero img{width:100%;max-width:520px;display:block}
  .hero .ph{color:var(--faint);font-size:12.5px;padding:40px}
  .hero .cap{position:absolute;left:12px;bottom:10px;font-size:11.5px;color:var(--muted);background:rgba(255,255,255,.7);border-radius:6px;padding:2px 8px}
  .hero .heroview{position:absolute;top:10px;right:10px;display:flex;gap:4px;z-index:1}
  .hero .heroview button{background:rgba(255,255,255,.82);border:1px solid var(--line2);color:var(--muted);border-radius:7px;padding:4px 9px;font-size:11.5px;font-weight:700;cursor:pointer;font-family:inherit}
  .hero .heroview button.on{background:var(--sel-bg);border-color:var(--sel);color:var(--ink)}

  /* branches / tree */
  #treeBranches{position:relative}
  #treeBranches:before{content:"";position:absolute;left:13px;top:10px;bottom:36px;width:2px;background:var(--line2);border-radius:2px}
  .branchhead{display:flex;align-items:center;gap:11px;font-weight:700;font-size:14px;color:var(--ink);margin:22px 0 12px;position:relative;z-index:1}
  .branchhead .ic{width:28px;height:28px;border-radius:9px;background:var(--panel);border:1px solid var(--line2);color:var(--ink);display:grid;place-items:center;box-shadow:var(--sh);flex:0 0 auto}
  .branchhead .ic svg{display:block}
  .branchhead .meta{margin-left:auto;font-weight:500;color:var(--faint);font-size:12px}
  .nodes{display:grid;grid-template-columns:repeat(auto-fill,minmax(198px,1fr));gap:11px;padding-left:39px}
  .node{position:relative;background:var(--panel);border:1px solid var(--line2);border-radius:11px;padding:12px 14px;padding-right:30px;cursor:pointer;transition:.12s;box-shadow:var(--sh)}
  .node:hover{border-color:var(--sel);transform:translateY(-1px)}
  .node.sel{border-color:var(--sel);background:var(--sel-bg);box-shadow:0 0 0 1px var(--sel) inset}
  .node.locked{opacity:.6;cursor:default}
  .node.locked:hover{border-color:var(--line2);transform:none}
  .node .check{position:absolute;top:8px;right:8px;width:18px;height:18px;border-radius:50%;background:var(--sel);color:#fff;display:none;align-items:center;justify-content:center;font-size:11px}
  .node.sel .check{display:flex}
  .node .nm{font-weight:600;font-size:13.5px;display:flex;align-items:center;gap:9px}
  .node .pr{font-size:12.5px;color:var(--muted);margin-top:5px}
  .node .pr b{color:var(--ink)}
  .node .tag{display:inline-block;margin-top:6px;font-size:10.5px;color:var(--faint);border:1px solid var(--line);border-radius:20px;padding:1px 7px}
  /* "coming soon" availability pill — outlined amber chip, reused across every option surface */
  .soon{display:inline-block;font-size:10px;font-weight:700;letter-spacing:.02em;border-radius:20px;padding:1px 8px;color:var(--warn);border:1px solid var(--warn);background:var(--panel)}
  .node .soon{margin-top:6px}
  .node .tag+.soon{margin-left:5px}
  .gear .soon{flex:0 0 auto}
  .trim .av.soon,.cmpcard .av.soon{color:var(--warn);border:1px solid var(--warn);background:var(--panel)}
  /* Launch Edition promo switch — full-width banner above the config tree (Performance only) */
  .launchbanner{display:flex;align-items:center;gap:13px;background:var(--sel-bg);border:1px solid var(--sel);border-radius:var(--r);padding:13px 16px;margin:20px 0 2px;box-shadow:var(--sh)}
  .launchbanner.off{background:var(--panel2);border-color:var(--line2)}
  .launchbanner .lbic{width:28px;height:28px;border-radius:9px;background:var(--panel);border:1px solid var(--line2);color:var(--ink);display:grid;place-items:center;flex:0 0 auto}
  .launchbanner .lbic svg{display:block}
  .launchbanner .lbtext{display:flex;flex-direction:column;gap:1px;min-width:0}
  .launchbanner .lbtext b{font-size:13.5px}
  .launchbanner .lbsub{font-size:12px;color:var(--muted);line-height:1.45}
  .swtoggle{flex:0 0 auto;margin-left:auto;width:44px;height:25px;border-radius:20px;border:1px solid var(--line2);background:var(--panel3);position:relative;cursor:pointer;padding:0;transition:background .15s,border-color .15s}
  .swtoggle .knob{position:absolute;top:2px;left:2px;width:19px;height:19px;border-radius:50%;background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.3);transition:left .15s}
  .swtoggle[aria-checked="true"]{background:var(--sel);border-color:var(--sel)}
  .swtoggle[aria-checked="true"] .knob{left:21px}
  .chip{display:inline-block;width:34px;height:34px;border-radius:50%;overflow:hidden;border:1px solid var(--line2);flex:0 0 auto;background-size:cover;background-position:center}
  .chip img{width:100%;height:100%;object-fit:cover;display:block}
  .chip.wheel{border-radius:8px;background:#e9eef3}

  /* drive-system selection cards — ranked hierarchy */
  .drivenodes{grid-template-columns:repeat(auto-fit,minmax(208px,1fr))}
  .dnode{position:relative;background:var(--panel);border:1px solid var(--line2);border-radius:11px;
    padding:13px 15px 11px;cursor:pointer;transition:.12s;box-shadow:var(--sh)}
  .dnode:hover{border-color:var(--sel);transform:translateY(-1px)}
  .dnode.fixed{cursor:default}
  .dnode.fixed:hover{border-color:var(--sel);transform:none}
  .dnode.sel{border-color:var(--sel);background:var(--sel-bg);box-shadow:0 0 0 1px var(--sel) inset}
  .dnode .check{position:absolute;top:11px;right:11px;width:19px;height:19px;border-radius:50%;
    background:var(--sel);color:#fff;display:none;align-items:center;justify-content:center}
  .dnode.sel .check{display:flex}
  .dname{font-weight:700;font-size:14.5px;line-height:1.22;color:var(--ink);padding-right:24px;min-height:2.44em}
  .dvar{font-size:10px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--faint);margin-top:4px}
  .dkey{display:flex;align-items:baseline;justify-content:space-between;gap:8px;margin:11px 0 9px}
  .drange{font-size:12.5px;color:var(--muted);font-weight:600}
  .drange b{font-size:21px;font-weight:800;color:var(--ink);letter-spacing:-.6px}
  .drange i{font-style:normal;font-size:9.5px;color:var(--faint);font-weight:600;margin-left:2px;text-transform:uppercase;letter-spacing:.04em}
  .dprice{font-size:15px;font-weight:800;color:var(--ink);white-space:nowrap}
  .dprice .dincl{color:var(--good);font-weight:700;font-size:13px}
  .dspecs{font-size:11px;color:var(--faint);line-height:1.45}
  .davail{font-size:10.5px;color:var(--muted);margin-top:9px;padding-top:8px;border-top:1px solid var(--line)}

  /* sticky summary */
  .sticky{position:sticky;top:18px;display:flex;flex-direction:column;gap:16px;transition:top .18s ease}
  /* soft scroll-fade at the edges when the cost results column scrolls internally (desktop only).
     --fade-top/--fade-bot are driven by updateColFade(); both 0 => fully opaque, no visible fade.
     Fades to transparent (revealing page --bg), so it stays theme-safe without a hardcoded colour. */
  .sticky.cost-scroll{
    --fade-top:0px; --fade-bot:0px;
    -webkit-mask-image:linear-gradient(to bottom,
      transparent 0, #000 var(--fade-top),
      #000 calc(100% - var(--fade-bot)), transparent 100%);
            mask-image:linear-gradient(to bottom,
      transparent 0, #000 var(--fade-top),
      #000 calc(100% - var(--fade-bot)), transparent 100%);
  }
  .pricelbl{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.08em;margin-bottom:4px}
  .bigprice{font-size:33px;font-weight:800;letter-spacing:-1px;line-height:1}
  .spec{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
  .spec .c{background:var(--panel2);border:1px solid var(--line);border-radius:9px;padding:7px 9px;font-size:11px;color:var(--muted);flex:1 1 auto;text-align:center}
  .spec .c b{display:block;color:var(--ink);font-size:14px;margin-top:2px}
  .sumline{display:flex;justify-content:space-between;font-size:13px;padding:6px 0;border-bottom:1px dashed var(--line);color:var(--muted)}
  .sumline span:last-child{color:var(--ink);font-variant-numeric:tabular-nums}
  .sumline.tot{border-bottom:none;font-weight:700;color:var(--ink);font-size:14.5px;margin-top:4px}
  .btn{display:block;width:100%;text-align:center;margin-top:14px;background:var(--ink);color:#fff;font-weight:700;border:none;border-radius:10px;padding:12px;cursor:pointer;font-size:14px}
  .btn svg{width:16px;height:16px;vertical-align:-3px;margin-left:5px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
  .btn:hover{filter:brightness(1.12)}
  .btn.alt{background:transparent;color:var(--ink);border:1px solid var(--line2)}
  .btn.alt:hover{filter:none;background:var(--panel2)}
  .note{font-size:11.5px;color:var(--faint);margin-top:8px;line-height:1.5}
  .flag{color:var(--warn)}

  /* calculator */
  .calcgrid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
  @media(max-width:760px){.calcgrid{grid-template-columns:1fr}}
  .field{margin-bottom:4px}
  .field label{display:block;font-size:12.5px;color:var(--muted);margin-bottom:5px;font-weight:600}
  /* side-by-side fields: labels wrap to different line counts — pin inputs to the
     cell bottom so paired inputs always align (grid rows stretch cells equally) */
  .calcgrid .field{display:flex;flex-direction:column}
  .calcgrid .field label{flex:1 1 auto}
  .field .hint{color:var(--faint);font-weight:400;font-size:11.5px}
  input[type=number],input[type=text],select{width:100%;height:40px;background:var(--panel);border:1px solid var(--line2);color:var(--ink);border-radius:9px;padding:9px 10px;font-size:14px;font-family:inherit;box-sizing:border-box}
  /* custom chevron: native select arrow floats far from the right edge on a
     wide control, so paint our own at a fixed 12px inset (muted UI tone) */
  select{-webkit-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%235c6a79' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:32px}
  input[type=number]:focus,input[type=text]:focus,select:focus{outline:none;border-color:var(--sel);box-shadow:0 0 0 3px var(--sel-bg)}
  input[type=range]{width:100%;accent-color:var(--sel)}
  .seg{display:flex;gap:6px}
  .seg button{flex:1;background:var(--panel);border:1px solid var(--line2);color:var(--muted);border-radius:9px;padding:10px 9px;cursor:pointer;font-weight:700;font-size:13px;font-family:inherit;line-height:1.2;transition:.12s}
  .seg button:hover{border-color:var(--sel)}
  .seg button small{display:block;font-weight:500;font-size:10.5px;color:var(--faint);margin-top:3px}
  .seg button.on{background:var(--sel-bg);border-color:var(--sel);color:var(--ink)}
  .seg button.on small{color:var(--sel)}
  .res{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:9px 20px;box-shadow:var(--sh)}
  /* rows center the value on the full label block (label + sublabel) and share
     one consistent rhythm: equal padding, hairline dividers between every row */
  .res .row{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:12px 0}
  .res .row+.row{border-top:1px solid var(--line)}
  .res .row .lbl{color:var(--muted);font-size:13px}
  .res .row .lbl small{display:block;color:var(--faint);font-size:11px;margin-top:2px}
  .res .row .val{font-size:18px;font-weight:700;font-variant-numeric:tabular-nums;text-align:right;color:var(--ink);letter-spacing:-.3px;white-space:nowrap}
  .res .row .val .permi{display:block;font-size:12px;font-weight:600;color:var(--faint);letter-spacing:0;margin-top:1px}
  .res .hero2{font-size:24px;font-weight:700}
  .accentbox{background:linear-gradient(180deg,#fffdf0,#fff8d6);border:1px solid #ecdf94;border-radius:12px;padding:14px 16px;margin-top:14px}
  .bar{display:flex;height:34px;border-radius:8px;overflow:hidden;margin:14px 0 12px;border:1px solid var(--line)}
  .bar div{height:100%;box-shadow:inset -1.5px 0 0 rgba(255,255,255,.65)}
  .bar div:last-child{box-shadow:none}
  /* cost-tab fixed scroll bar — appears once the summary scrolls out of view */
  .coststicky{display:none;position:fixed;left:0;right:0;top:0;z-index:20;
    background:var(--panel);border-bottom:1px solid var(--line2);box-shadow:var(--sh2)}
  .coststicky.show{display:block;animation:csIn .18s ease}
  @keyframes csIn{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}
  .coststicky-inner{max-width:1180px;margin:0 auto;padding:9px 20px;
    display:flex;align-items:center;gap:16px;justify-content:space-between}
  .cs-figs{display:flex;gap:18px;flex:0 1 auto;min-width:0}
  .cs-fig{display:flex;flex-direction:column;line-height:1.12}
  .cs-fig span{font-size:10px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--muted)}
  .cs-fig>b{font-size:15px;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums}
  .cs-fig span b{color:var(--ink)}
  /* Monthly payment leads: bold ink label + oversized value, mirrors the sidebar .pay row */
  .cs-fig--primary{flex:0 0 auto;padding-right:18px;border-right:1px solid var(--line)}
  .cs-fig--primary span{font-size:11px;text-transform:none;letter-spacing:0;color:var(--ink);font-weight:700}
  .cs-fig--primary>b{font-size:22px;font-weight:800;letter-spacing:-.4px;line-height:1.05}
  .cs-fig--primary small{font-size:10.5px;color:var(--faint);line-height:1.2}
  .cs-fig--primary small:empty{display:none}
  .cs-horizon{display:flex;align-items:center;gap:8px;flex:0 0 auto;margin-left:auto}
  .cs-horizon-lbl{font-size:11px;font-weight:700;color:var(--muted);white-space:nowrap}
  .cs-step{display:inline-flex;align-items:center;border:1px solid var(--line2);border-radius:9px;overflow:hidden;background:var(--panel)}
  .cs-stepbtn{width:26px;height:26px;display:flex;align-items:center;justify-content:center;
    background:var(--panel);border:0;color:var(--ink);font-size:16px;font-weight:700;font-family:inherit;
    line-height:1;cursor:pointer;transition:.12s}
  .cs-stepbtn:hover:not(:disabled){background:var(--sel-bg);color:var(--sel)}
  .cs-stepbtn:disabled{opacity:.4;cursor:default}
  .cs-step-val{min-width:48px;text-align:center;font-size:11px;font-weight:700;color:var(--muted);
    border-left:1px solid var(--line2);border-right:1px solid var(--line2);padding:0 4px;white-space:nowrap}
  .cs-step-val b{color:var(--ink);font-size:13px;font-variant-numeric:tabular-nums}
  @media(max-width:640px){
    .coststicky .cs-figs{display:none}
    .cs-fig--primary{border-right:0;padding-right:0}
  }
  /* while the fixed bar is up, drop the pinned results column below it */
  .coststicky.show~.grid2 .sticky{top:76px}
  /* iOS zooms the page when a focused control's text is under 16px — bump
     control text to 16px on touch devices only (desktop keeps 14px) */
  @media (hover:none) and (pointer:coarse){
    input[type=number],input[type=text],select,.scencard .scname{font-size:16px}
  }
  /* itemized breakdown — aligned columns instead of staggered flex-wrap */
  .legend{display:flex;flex-direction:column}
  .legend .li{display:grid;grid-template-columns:11px 1fr auto auto;align-items:center;column-gap:10px;
    padding:7px 2px;border-bottom:1px solid var(--line);font-size:12.5px}
  .legend .li:last-child{border-bottom:none}
  .legend .li i{width:11px;height:11px;border-radius:3px}
  .legend .li .nm{color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .legend .li .pc{color:var(--faint);font-size:11px;font-variant-numeric:tabular-nums;text-align:right;min-width:30px}
  .legend .li .vl{color:var(--ink);font-weight:600;font-variant-numeric:tabular-nums;text-align:right;min-width:64px}
  .legend .lesshdr{font-size:10.5px;text-transform:uppercase;letter-spacing:.08em;color:var(--faint);
    font-weight:700;margin:10px 0 2px;padding-top:9px;border-top:1px solid var(--line2)}
  .legend .li.sub .nm{color:var(--muted)}
  .legend .li.sub .vl{color:var(--good)}

  details{margin-top:18px;background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:4px 18px;box-shadow:var(--sh)}
  details summary{cursor:pointer;font-weight:700;font-size:13px;padding:13px 0;color:var(--ink)}
  details p{font-size:12.5px;color:var(--muted);line-height:1.65}
  /* section helper text + deduction readout */
  .sechelp{font-size:12px;color:var(--muted);line-height:1.6;margin:-2px 0 12px}
  .sechelp b{color:var(--ink)}
  .statesets{font-size:12.5px;color:var(--muted);line-height:1.6;margin:10px 0 12px;padding:9px 12px;background:var(--panel2);border:1px solid var(--line);border-radius:9px}
  .statesets b{color:var(--ink);font-weight:700}
  /* input-group cards (cost tab): each group is its own panel, tagged with the
     cost bucket it feeds so inputs visually rhyme with the charts + breakdown */
  .igstack{display:flex;flex-direction:column;gap:14px;min-width:0}
  .igroup h2{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
  .igtag{font-size:9px;letter-spacing:.09em;font-weight:800;padding:2px 8px;border-radius:999px;text-transform:uppercase;line-height:1.7}
  .igtag.t-up{color:#7a6a00;background:color-mix(in srgb,#f4cf17 24%,transparent)}
  .igtag.t-fin{color:#a3352f;background:color-mix(in srgb,#d6453f 14%,transparent)}
  .igtag.t-run{color:#175f6b;background:color-mix(in srgb,#1f7f8c 14%,transparent)}
  .igtag.t-back{color:#177a45;background:color-mix(in srgb,#1f9d57 14%,transparent)}
  .vsgas{margin-top:14px;padding-top:12px;border-top:1px dashed var(--line)}
  .vsgas .vgh{font-size:12px;font-weight:700;color:var(--muted);margin-bottom:9px}
  .vsgas .vgh .hint{color:var(--faint);font-weight:400;font-size:11.5px}
  .dedh{font-size:12px;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);margin:18px 0 8px;font-weight:700}
  .dedbox{background:linear-gradient(180deg,#fffdf0,#fff8d6);border:1px solid #ecdf94;border-radius:12px;padding:12px 14px;margin-top:12px;font-size:12.5px}
  .dedbox .dl{display:flex;justify-content:space-between;gap:12px;padding:4px 0;color:var(--muted)}
  .dedbox .dl b{color:var(--ink);font-variant-numeric:tabular-nums}
  .dedbox .dl.save{border-top:1px dashed #e3d488;margin-top:4px;padding-top:8px;font-weight:700}
  .dedbox .dl.save b{color:var(--good);font-size:14px}
  .dedbox .flag{color:var(--warn);font-weight:600}
  .dedbox .muted{color:var(--faint);font-size:11.5px;margin-top:7px;line-height:1.5}
  /* sources & assumptions — scannable sections */
  details .srcsec{padding:12px 0;border-top:1px solid var(--line)}
  details .srcsec:first-of-type{border-top:none}
  details .srcsec h4{display:flex;justify-content:space-between;align-items:baseline;gap:10px;margin:0 0 6px;font-size:11px;font-weight:700;color:var(--ink);text-transform:uppercase;letter-spacing:.06em}
  details .srcsec h4 .srcdate{font-weight:400;text-transform:none;letter-spacing:0;color:var(--faint);font-size:10.5px;white-space:nowrap}
  details .srcsec p{margin:0}
  details .srcsec .k{color:var(--ink);font-weight:600}
  /* compare scenarios */
  .scbtn{font-size:12.5px;font-weight:700;border:1px solid var(--sel);background:var(--sel-bg);color:var(--ink);border-radius:20px;padding:6px 14px;cursor:pointer;font-family:inherit}
  .scbtn:hover{filter:brightness(.97)}
  .scenempty{color:var(--faint);font-size:13px;background:var(--panel2);border:1px dashed var(--line2);border-radius:12px;padding:22px;text-align:center}
  .scengrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(212px,1fr));gap:12px}
  .scencard{background:var(--panel2);border:1px solid var(--line);border-radius:12px;padding:14px;position:relative}
  .scencard.best{border-color:var(--good);box-shadow:0 0 0 1px var(--good) inset}
  .scencard .sctag{position:absolute;top:-9px;left:12px;font-size:10px;font-weight:700;padding:2px 9px;border-radius:20px;background:var(--good);color:#fff}
  .scencard .scnamerow{display:flex;align-items:center;gap:7px}
  .scencard .scdot{width:9px;height:9px;border-radius:50%;flex:0 0 auto}
  .scencard .scname{font-weight:700;font-size:14px;border:none;background:transparent;color:var(--ink);font-family:inherit;flex:1;min-width:0;padding:2px 0}
  .scencard .scname:focus{outline:none;border-bottom:1px solid var(--sel)}
  .scencard .scpay{font-size:11px;color:var(--muted);margin-top:1px;line-height:1.4}
  .scencard .sctrue{font-size:22px;font-weight:800;letter-spacing:-.5px;margin:10px 0 1px}
  .scencard .sctruelbl{font-size:11px;color:var(--muted)}
  .scencard .scbar{display:flex;height:8px;border-radius:5px;overflow:hidden;margin:11px 0 4px;border:1px solid var(--line)}
  .scencard .scbar div{height:100%}
  .scencard .scrow{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);padding:4px 0;border-top:1px dashed var(--line)}
  .scencard .scrow b{color:var(--ink);font-variant-numeric:tabular-nums;font-weight:600}
  .scencard .scdelta{font-size:11px;color:var(--warn);margin-top:7px;font-weight:600}
  .scencard .scact{display:flex;gap:8px;margin-top:11px}
  .scencard .scact button{flex:1;font-size:11.5px;font-weight:600;border:1px solid var(--line2);background:var(--panel);color:var(--muted);border-radius:8px;padding:6px;cursor:pointer;font-family:inherit}
  .scencard .scact button:hover{border-color:var(--sel);color:var(--ink)}

  /* compare */
  .cmp{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
  @media(max-width:900px){.cmp{grid-template-columns:1fr}}
  .cmpcard{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:18px;box-shadow:var(--sh)}
  .cmpcard.perf{border-color:var(--line);box-shadow:var(--sh)}
  .cmpcard h3{margin:0;font-size:18px}
  .cmpcard .price{font-size:24px;font-weight:800;margin-top:2px}
  .cmpcard .av{font-size:11.5px;color:var(--faint)}
  .statgrid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:14px 0}
  .statgrid .s{background:var(--panel2);border:1px solid var(--line);border-radius:9px;padding:8px;text-align:center}
  .statgrid .s b{display:block;font-size:16px}
  .statgrid .s span{font-size:10.5px;color:var(--muted)}
  .feat{font-size:12.5px;color:var(--muted);margin:5px 0;display:flex;gap:8px;align-items:flex-start}
  .feat .k{color:var(--accent-deep);flex:0 0 auto;margin-top:1px}
  .feat .x{color:var(--sel);flex:0 0 auto;margin-top:1px}
  .feat svg,.check svg{display:block}
  .verdict{background:var(--panel);border:1px solid var(--line);
    color:var(--ink);border-radius:var(--r);padding:18px;margin-top:16px;box-shadow:var(--sh)}
  .verdict .big{font-size:19px;font-weight:800;letter-spacing:-.2px}
  .verdict .big b{color:var(--sel);white-space:nowrap}
  .verdict p{font-size:12.5px;color:var(--muted);line-height:1.55;margin:0}
  .vgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:13px}
  .vcard{background:var(--panel2);border:1px solid var(--line);border-radius:10px;padding:11px}
  .vcard.lowest{border-color:var(--sel);background:var(--sel-bg)}
  .vtop{display:flex;justify-content:space-between;gap:8px;align-items:baseline;margin-bottom:5px}
  .vtop span{font-size:11px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
  .vtop b{font-size:15px;color:var(--ink);font-variant-numeric:tabular-nums;white-space:nowrap}
  .vnote{font-size:11px;color:var(--faint);line-height:1.45;margin-top:10px}
  .h2row{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
  .h2row h2{margin:0}
  .reset{font-size:12px;font-weight:600;border:1px solid var(--line2);background:var(--panel);color:var(--muted);border-radius:20px;padding:6px 13px;cursor:pointer;font-family:inherit;display:inline-flex;align-items:center;gap:6px}
  .reset:hover{border-color:var(--sel);color:var(--ink)}
  .reset svg{display:block}
  .matrix{width:100%;border-collapse:collapse;font-size:13px}
  .mobile-cmp{display:none}
  .matrix th{text-align:left;font-size:11px;text-transform:uppercase;letter-spacing:.07em;color:var(--muted);padding:9px 12px;border-bottom:1px solid var(--line);font-weight:700}
  .matrix td{padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:middle;color:var(--muted)}
  .matrix td.lab{color:var(--ink);font-weight:500;width:31%}
  .matrix tr:last-child td{border-bottom:none}
  .matrix td.yes{color:var(--sel);font-weight:600}
  .matrix td.yes.launch{color:var(--sel)}
  .matrix td small{display:block;font-size:10px;color:var(--faint);font-weight:400;margin-top:1px}
  .matrix td.no{color:var(--faint);font-weight:400}
  .matrix td.opt{color:var(--ink);font-weight:600}
  .matrix td svg{display:inline-block;vertical-align:-3px;margin-right:3px}
  .matrix td.val{color:var(--ink)}
  /* Standard specs that shift with the chosen drivetrain: base value struck through, new value bold */
  .matrix td.val.chg .was{color:var(--faint);font-weight:400;text-decoration:line-through}
  .matrix td.val.chg .now{color:var(--ink);font-weight:700;margin-left:5px}
  .matrix td.excl{color:var(--ink);font-weight:600}
  .matrix tr.diff td.lab{font-weight:600;color:var(--ink)}
  .matrix tr.diff td.val{font-weight:700}
  .matrix tr.same td.lab{color:var(--muted);font-weight:400}
  .matrix tr.same td.val{color:var(--faint)}
  .matrix tr.same td.yes{color:var(--faint);font-weight:400}
  .matrix tr.same td svg{opacity:.4}
  .matrix tr.divider td{padding:6px 12px;background:var(--panel2);font-size:10.5px;text-transform:uppercase;letter-spacing:.08em;color:var(--faint);font-weight:700}
  .swatchpick{display:flex;flex-wrap:wrap;gap:6px;align-items:center}
  .swdot{width:24px;height:24px;border-radius:50%;border:1px solid var(--line2);cursor:pointer;overflow:hidden;
    background-size:cover;background-position:center;transition:.1s;flex:0 0 auto}
  .swdot:hover{transform:translateY(-1px)}
  .swdot.sel{border-color:var(--sel);box-shadow:0 0 0 2px var(--panel),0 0 0 3px var(--sel)}
  .swdot img{width:100%;height:100%;object-fit:cover;display:block}
  .drvpick{display:flex;flex-wrap:wrap;gap:6px}
  .drvopt{font-size:11px;font-weight:700;border:1px solid var(--line2);border-radius:8px;padding:5px 9px;
    cursor:pointer;background:var(--panel);color:var(--muted);transition:.1s;white-space:nowrap}
  .drvopt:hover{border-color:var(--sel);color:var(--ink)}
  .drvopt.sel{background:var(--sel-bg);border-color:var(--sel);color:var(--ink)}
  .swcap{font-size:11px;color:var(--muted);margin-top:7px;font-weight:600}
  .swcap .px{color:var(--faint);font-weight:400}
  .matrix td.cfg-lab{color:var(--ink);font-weight:600}
  .matrix tr.cfgrow td{background:transparent;vertical-align:top}
  .swatchrow{display:flex;flex-wrap:wrap;gap:8px}
  .sw{display:flex;align-items:center;gap:8px;border:1px solid var(--line2);border-radius:10px;padding:6px 12px 6px 7px;cursor:pointer;background:var(--panel);font-size:12.5px;font-weight:600;box-shadow:var(--sh)}
  .sw:hover{border-color:var(--sel)}
  .sw.sel{border-color:var(--sel);background:var(--sel-bg);box-shadow:0 0 0 1px var(--sel) inset}
  .sw .px{color:var(--faint);font-weight:400}
  .sw .perfonly{font-size:10px;color:var(--muted);border:1px solid var(--line2);border-radius:20px;padding:1px 7px;margin-left:2px}
  .cardbreak{font-size:11.5px;color:var(--faint);margin-top:3px}
  .cardrow{display:flex;align-items:center;gap:9px;margin-top:12px;font-size:12.5px;color:var(--muted)}
  .cardrow .chip{width:30px;height:30px}
  .cmpbadge{position:absolute;left:12px;top:12px;background:rgba(255,255,255,.88);border:1px solid var(--line2);border-radius:8px;padding:3px 9px;font-size:11px;color:var(--ink);font-weight:600}
  .matrix tr.optrow{cursor:pointer}
  .matrix tr.optrow:hover td{background:var(--panel2)}
  .matrix td.opt-lab{color:var(--ink);font-weight:600}
  .chev{vertical-align:-1px;color:var(--faint);margin-left:4px;transition:transform .15s}
  .chev.open{transform:rotate(180deg)}
  .chip.mini{width:21px;height:21px;vertical-align:-6px;margin-right:6px}
  .matrix td.val .px{color:var(--faint);font-weight:400;font-size:11.5px}
  .matrix tr.pickerrow td{background:var(--panel2);padding:12px}
  .matrix tr.pickerrow .swatchrow{gap:7px}
  /* config rows: each option is a chip (swatch + name + price), stacked in-column */
  .optlist{display:flex;flex-direction:column;gap:5px}
  .optchip{display:flex;align-items:center;gap:8px;border:1px solid var(--line2);border-radius:9px;
    padding:5px 8px;cursor:pointer;background:var(--panel);transition:.1s}
  .optchip:hover{border-color:var(--sel)}
  .optchip.sel{border-color:var(--sel);background:var(--sel-bg);box-shadow:0 0 0 1px var(--sel) inset}
  .optchip.ro{cursor:default}
  .optchip.ro:not(.sel):hover{border-color:var(--line2)}
  .optchip .sw{width:20px;height:20px;border-radius:50%;border:1px solid var(--line2);overflow:hidden;
    flex:0 0 auto;background-size:cover;background-position:center}
  .optchip .sw img{width:100%;height:100%;object-fit:cover;display:block}
  .optchip .sw.wheel{border-radius:5px;background:#e9eef3}
  .optchip .onm{font-size:12px;font-weight:600;color:var(--ink);flex:1 1 auto;min-width:0;
    white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .optchip .opx{font-size:10px;font-weight:700;border-radius:20px;padding:1px 7px;flex:0 0 auto;
    white-space:nowrap;font-variant-numeric:tabular-nums}
  .optchip .opx.free{color:var(--muted);background:var(--panel3)}
  .optchip .opx.add{color:var(--ink);background:var(--panel3)}
  .optchip .onote{font-size:10px;color:var(--faint);font-weight:500;flex:0 0 auto;white-space:nowrap}
  .optchip.toggle .ack{display:flex;width:16px;height:16px;border-radius:50%;background:var(--sel);
    color:#fff;align-items:center;justify-content:center;flex:0 0 auto}
  .optchip.toggle .ack svg{display:block;transform:translate(1px,0)}
  /* pinned 'as configured' totals row */
  .matrix tr.totalrow td{position:sticky;top:0;z-index:2;background:var(--panel);padding:10px 12px;
    box-shadow:inset 0 -2px 0 var(--line2),0 4px 10px rgba(20,32,46,.06)}
  .matrix tr.totalrow td.lab{color:var(--muted);font-weight:700;font-size:11px;
    text-transform:uppercase;letter-spacing:.06em}
  .ttl{font-size:11px;color:var(--muted);font-weight:600;line-height:1.2}
  .ttlp{font-size:19px;font-weight:800;color:var(--ink);letter-spacing:-.5px;
    font-variant-numeric:tabular-nums;line-height:1.15;margin-top:1px}
  .ttlp.best{color:var(--good)}
  .ttld{font-size:10px;color:var(--faint);font-weight:500;margin-top:1px}
  .trcpt{display:flex;flex-direction:column;gap:1px;margin:4px 0 3px;padding-top:3px;border-top:1px dashed var(--line)}
  .trln{display:flex;justify-content:space-between;gap:8px;font-size:11px;color:var(--muted);font-variant-numeric:tabular-nums}
  .trln span:last-child{color:var(--ink);font-weight:600}
  /* accessories section (collapsible) */
  .matrix tr.acchdr td{cursor:pointer;user-select:none;padding-top:9px;padding-bottom:9px}
  .matrix tr.acchdr:hover td{background:var(--panel3)}
  .matrix tr.acchdr .acccount{font-weight:500;text-transform:none;letter-spacing:0;color:var(--faint);margin-left:4px}
  .acchdr-row{display:flex;align-items:center;gap:8px}
  .acchdr-row .accbtn{margin-left:auto;display:inline-flex;align-items:center;gap:7px;
    font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--sel);
    border:1px solid var(--line2);border-radius:20px;padding:5px 13px;background:var(--panel);transition:.12s}
  .matrix tr.acchdr:hover .accbtn{border-color:var(--sel);background:var(--sel-bg)}
  .matrix tr.subdiv td{padding:8px 12px 3px;font-size:10px;text-transform:uppercase;letter-spacing:.08em;
    color:var(--faint);font-weight:700;background:transparent}
  .matrix tr.accnote td{font-size:11px;color:var(--muted);line-height:1.55;padding:10px 12px 4px;background:transparent}
  .cfgnote{display:block;font-size:10.5px;color:var(--faint);font-weight:500;margin-top:2px}
  /* shared gear & accessories parts list */
  .buildgear{margin-top:18px}
  #gearPanel .h2row{margin-bottom:6px}
  .gearsum{font-size:11px;font-weight:600;text-transform:none;letter-spacing:0;color:var(--faint);margin-left:8px}
  .gearsum b{color:var(--sel)}
  .infomini{display:inline-grid;place-items:center;width:14px;height:14px;border-radius:50%;border:1px solid var(--line2);
    color:var(--faint);font-size:9px;font-weight:800;font-style:normal;vertical-align:1px}
  .grphead{display:flex;align-items:center;gap:9px;margin:18px 0 11px;font-size:10px;text-transform:uppercase;
    letter-spacing:.08em;color:var(--faint);font-weight:700}
  .grphead:after{content:"";flex:1;height:1px;background:var(--line)}
  .gearlist{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:11px}
  .gear{position:relative;display:flex;align-items:center;gap:12px;background:var(--panel);border:1px solid var(--line2);
    border-radius:12px;padding:10px 13px;cursor:pointer;transition:.12s;box-shadow:var(--sh)}
  .gear:hover{border-color:var(--sel);transform:translateY(-1px)}
  .gear.on{border-color:var(--sel);background:var(--sel-bg);box-shadow:0 0 0 1px var(--sel) inset}
  .gear .ic{position:relative;width:46px;height:46px;border-radius:10px;background:#f2f2f2;
    border:1px solid var(--line);overflow:hidden;flex:0 0 auto;display:grid;place-items:center}
  .gear .ic .ph{grid-area:1/1;display:grid;place-items:center;color:var(--faint)}
  .gear.on .ic .ph{color:var(--sel)}
  .gear .ic img{grid-area:1/1;width:100%;height:100%;object-fit:contain;background:#f2f2f2}
  .gear .gbody{flex:1 1 auto;min-width:0;display:flex;flex-direction:column;gap:5px}
  .gear .gnm{position:static;font-size:12.5px;font-weight:600;color:var(--ink);line-height:1.25;
    display:flex;align-items:center;gap:6px}
  .gear .gpx{font-size:11px;font-weight:800;color:var(--ink);background:var(--panel3);border-radius:20px;
    padding:1px 9px;font-variant-numeric:tabular-nums;align-self:flex-start}
  .gear.on .gpx{background:var(--sel);color:#fff}
  .gear .check{position:absolute;top:8px;right:8px;width:18px;height:18px;border-radius:50%;background:var(--sel);
    color:#fff;display:none;align-items:center;justify-content:center}
  .gear.on .check{display:flex}
  .gear .info{width:15px;height:15px;border-radius:50%;border:1px solid var(--line2);color:var(--faint);
    display:inline-grid;place-items:center;font-size:9px;font-weight:800;cursor:help;flex:0 0 auto;
    font-style:normal;background:var(--panel)}
  .gear .info:hover{border-color:var(--sel);color:var(--sel)}
  .gear .tip{position:absolute;left:12px;right:12px;bottom:calc(100% + 6px);background:var(--ink);color:#eef3f7;
    border-radius:10px;padding:10px 12px;font-size:11.5px;line-height:1.5;box-shadow:var(--sh2);z-index:30;
    opacity:0;visibility:hidden;transform:translateY(3px);transition:.12s;text-align:left;font-weight:400}
  .gear .tip:after{content:"";position:absolute;top:100%;left:24px;border:6px solid transparent;border-top-color:var(--ink)}
  .gear .tip:before{content:"";position:absolute;top:100%;left:0;right:0;height:9px}
  .gear .tip b{color:#fff} .gear .tip a{color:#7fd3da;font-weight:600}
  .gear .info:hover ~ .tip,.gear .info:focus ~ .tip,.gear .tip:hover{opacity:1;visibility:visible;transform:translateY(0)}

  /* ===== Cost-over-time (new) tab ===== */
  .tabnew{display:inline-block;font-size:9px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;
    vertical-align:1px;margin-left:5px;background:var(--accent);color:#1a1700;border-radius:20px;padding:1px 6px}
  .grid2{align-items:start}
  .kpis h2{margin-bottom:12px}
  .kpigrid{display:grid;grid-template-columns:1fr 1fr;gap:9px}
  .kpi{background:var(--panel2);border:1px solid var(--line);border-radius:10px;padding:10px 11px}
  .kpi .kl{font-size:10.5px;color:var(--muted);line-height:1.3}
  .kpi .kv{font-size:17px;font-weight:800;color:var(--ink);letter-spacing:-.4px;margin-top:3px;font-variant-numeric:tabular-nums}
  .kpi .kv.good{color:var(--good)} .kpi .kv.warn{color:var(--bad)}
  .kpi .ks{font-size:10px;color:var(--faint);margin-top:1px}

  /* loaded-vehicle banner */
  .loaded{display:flex;align-items:center;gap:16px;background:var(--panel);border:1px solid var(--line);
    border-radius:var(--r);padding:14px 18px;box-shadow:var(--sh);margin-bottom:16px;flex-wrap:wrap}
  .loaded.empty{border-style:dashed;border-color:var(--line2);background:var(--panel2);color:var(--muted)}
  .loaded .lthumb{width:108px;height:64px;border-radius:10px;overflow:hidden;flex:0 0 auto;background:linear-gradient(180deg,#f7f9fb,#e9eef3);
    border:1px solid var(--line);display:grid;place-items:center}
  .loaded .lthumb img{width:100%;height:100%;object-fit:cover}
  .loaded .lbody{flex:1 1 240px;min-width:0}
  .loaded .ltrim{font-size:17px;font-weight:800;letter-spacing:-.3px;display:flex;align-items:center;gap:9px}
  .loaded .lcfg{font-size:12px;color:var(--muted);margin-top:5px;line-height:1.5}
  .loaded .lcfg b{color:var(--ink)}
  .loaded .lprice{text-align:right;flex:0 0 auto}
  .loaded .lprice .pv{font-size:24px;font-weight:800;letter-spacing:-.6px;font-variant-numeric:tabular-nums}
  .loaded .lprice .pg{font-size:11.5px;color:var(--faint);margin-top:2px}
  .loaded .lswap{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;border:1px solid var(--line2);background:var(--panel);color:var(--muted);
    border-radius:20px;padding:7px 13px;cursor:pointer;font-family:inherit;flex:0 0 auto;white-space:nowrap}
  .loaded .lswap svg{width:14px;height:14px;flex:0 0 auto;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
  .loaded .lswap:hover{border-color:var(--sel);color:var(--ink)}
  .loaded.empty .bigemoji{font-size:22px}

  /* charts */
  .charts{display:grid;grid-template-columns:1fr 1fr;gap:16px}
  @media(max-width:840px){.charts{grid-template-columns:1fr}}
  .chartcard{background:var(--panel2);border:1px solid var(--line);border-radius:12px;padding:15px 16px 13px}
  .charthd{display:flex;align-items:baseline;justify-content:space-between;gap:10px;margin-bottom:4px}
  .charthd h3{margin:0;font-size:13.5px;font-weight:700;color:var(--ink)}
  .chartsub{font-size:11px;color:var(--faint);font-weight:600;font-variant-numeric:tabular-nums;text-align:right}
  .chartbox{margin:6px 0 2px}
  .chartbox svg{display:block;width:100%;height:auto;overflow:visible}
  .chartcap{font-size:11.5px;color:var(--muted);line-height:1.5;margin-top:7px}
  .chartcap b{color:var(--ink)}
  .chartcap .uw{color:var(--bad);font-weight:700}
  .chartcap .eq{color:var(--good);font-weight:700}
  /* year-by-year breakdown table */
  .yearbdwrap{margin-top:16px}
  .yearbd{overflow-x:auto;margin-top:4px;border:1px solid var(--line);border-radius:12px}
  .ybt{border-collapse:collapse;width:100%;font-size:12.5px}
  .ybt th,.ybt td{padding:8px 12px;text-align:right;white-space:nowrap;font-variant-numeric:tabular-nums;
    border-bottom:1px solid var(--line)}
  .ybt thead th{background:var(--panel2);color:var(--faint);font-weight:700;font-size:11px;
    text-transform:uppercase;letter-spacing:.05em;position:sticky;top:0}
  .ybt .cat{text-align:left;position:sticky;left:0;background:var(--panel);z-index:1}
  .ybt thead .cat{background:var(--panel2);z-index:2}
  .ybt td.cat{color:var(--muted);font-weight:600}
  .ybt .cat i{display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:8px;vertical-align:-1px}
  .ybt td{color:var(--ink)}
  .ybt .z{color:var(--faint)}
  .ybt .tot{background:var(--panel2);color:var(--ink);font-weight:700;border-left:1px solid var(--line2)}
  .ybt tr:last-child td{border-bottom:none}
  .ybt tr.cred td{color:var(--good)}
  .ybt tr.cred .cat{color:var(--muted)}
  .ybt tr.net td{border-top:2px solid var(--line2);font-weight:700;color:var(--ink)}
  .ybt tr.net .cat{color:var(--ink)}
  /* svg primitives */
  .ax{stroke:var(--line2);stroke-width:1}
  .axg{stroke:var(--line);stroke-width:1;stroke-dasharray:2 3}
  .axlbl{fill:var(--faint);font-size:9.5px;font-family:inherit}
  .axlbl.mid{text-anchor:middle} .axlbl.end{text-anchor:end} .axlbl.start{text-anchor:start}
  .clbl{fill:var(--ink);font-size:10px;font-weight:700;font-family:inherit;font-variant-numeric:tabular-nums}
  .clbl.mut{fill:var(--muted);font-weight:600}
  .cdot{stroke:#fff;stroke-width:1.5}
  .clegend{display:flex;flex-wrap:wrap;gap:10px;margin-top:9px}
  .clegend .ci{display:flex;align-items:center;gap:6px;font-size:11px;color:var(--muted)}
  .clegend .ci i{width:10px;height:10px;border-radius:3px;flex:0 0 auto}
  .clegend .ci i.ln{height:3px;width:14px;border-radius:2px}
  .barseg{stroke:var(--panel2);stroke-width:.75;transition:opacity .12s}
  .barseg:hover{opacity:.85}
  .barseg.dim{opacity:.22}
  /* floating tooltip shared by the stacked charts + money-goes bar */
  .ctip{position:fixed;z-index:100;pointer-events:none;background:var(--panel);border:1px solid var(--line2);
    border-radius:9px;padding:7px 10px;font-size:12px;line-height:1.5;color:var(--muted);box-shadow:var(--sh2);
    opacity:0;transition:opacity .08s;max-width:250px}
  .ctip.show{opacity:1}
  .ctip b{color:var(--ink);font-variant-numeric:tabular-nums}
  .clegend .ci[data-k]{cursor:default}
  .bar div{transition:opacity .12s}
  .bar div.dim{opacity:.25}
  .bdrow.hl{background:var(--panel2);border-radius:7px}
  .chartnote{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:9px;
    min-height:150px;text-align:center;color:var(--muted);font-size:26px;padding:10px}
  .chartnote span{max-width:230px;line-height:1.5;font-size:12.5px}

  /* results: clearer separation between financing and running costs */
  #view-cost2 .csec{margin-top:26px;padding-top:20px}
  #view-cost2 .panel>h2:first-child{margin-bottom:10px}
  /* Monthly payment is the hero — a step above the hero2 figures, not double */
  .res .row.pay .lbl{color:var(--ink);font-weight:700;font-size:14px}
  .res .row.pay .val{font-size:27px;font-weight:800;letter-spacing:-.5px}
  /* grouped, toggleable breakdown */
  .bd{display:flex;flex-direction:column}
  .bdgrp{margin-top:13px}
  .bdgrp .gh{display:flex;align-items:baseline;justify-content:space-between;gap:8px;font-size:10.5px;
    text-transform:uppercase;letter-spacing:.07em;color:var(--faint);font-weight:700;margin:0 0 4px;
    padding-top:11px;border-top:1px solid var(--line2)}
  .bdgrp.first .gh{border-top:none;padding-top:2px}
  .bdgrp .gh .gt{color:var(--ink);font-variant-numeric:tabular-nums}
  .bdrow{display:grid;grid-template-columns:11px 1fr auto auto;align-items:center;column-gap:9px;
    padding:6px 2px;font-size:12.5px;border-bottom:1px solid var(--line)}
  .bdrow:last-child{border-bottom:none}
  .bdrow i{width:11px;height:11px;border-radius:3px}
  .bdrow .nm{color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .bdrow .pc{color:var(--faint);font-size:11px;font-variant-numeric:tabular-nums;text-align:right;min-width:30px}
  .bdrow .vl{color:var(--ink);font-weight:600;font-variant-numeric:tabular-nums;text-align:right;min-width:60px}
  .bdrow.sub .vl{color:var(--good)}
  .bdrow.credit .vl{color:var(--good)}
  .bdrow.off{opacity:.5}
  .bdrow.off .vl{text-decoration:line-through;color:var(--faint)}
  .bdrow .tgl{justify-self:end}
  /* summed rule lines: Out-the-door / Gross spend (.rule), and the True cost bottom line (.grand) */
  .bdrow.rule{grid-template-columns:1fr auto;border-bottom:none;border-top:1px solid var(--line2);
    margin-top:2px;padding-top:8px}
  .bdrow.rule .nm{color:var(--ink);font-weight:700;text-transform:none}
  .bdrow.rule .vl{color:var(--ink);font-weight:700}
  .bdrow.grand{border-top:2px solid var(--line2);margin-top:4px;padding-top:10px}
  .bdrow.grand .nm{font-size:14px}
  .bdrow.grand .vl{font-size:15px;letter-spacing:-.3px}
  /* tiny toggle switch */
  .tgl{position:relative;width:28px;height:16px;border-radius:20px;background:var(--line2);cursor:pointer;
    flex:0 0 auto;transition:.15s;border:none;padding:0;display:inline-block;vertical-align:middle}
  .tgl:after{content:"";position:absolute;top:2px;left:2px;width:12px;height:12px;border-radius:50%;
    background:#fff;transition:.15s;box-shadow:0 1px 2px rgba(0,0,0,.25)}
  .tgl.on{background:var(--sel)}
  .tgl.on:after{left:14px}
  .miniswitch{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--muted);
    border:1px solid var(--line2);border-radius:10px;padding:9px 12px;background:var(--panel2);margin-top:11px}
  .miniswitch span{flex:1 1 auto;line-height:1.4}
  .miniswitch b{color:var(--ink);font-weight:700}
  .bdhint{font-size:11px;color:var(--faint);margin-top:11px;line-height:1.55;padding-top:10px;border-top:1px solid var(--line)}
  /* export to chat */
  .exprow{display:flex;gap:10px;align-items:center;margin-top:12px;flex-wrap:wrap}
  .expbtn{display:inline-flex;align-items:center;gap:7px;font-size:12.5px;font-weight:700;border:1px solid var(--sel);
    background:var(--sel-bg);color:var(--ink);border-radius:20px;padding:8px 15px;cursor:pointer;font-family:inherit}
  .expbtn svg{width:15px;height:15px;flex:0 0 auto;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
  .expbtn:hover{filter:brightness(.97)}
  .expok{font-size:11.5px;color:var(--good);font-weight:600;opacity:0;transition:.2s}
  .expok.show{opacity:1}

  /* Between phone and desktop the aux links (Changelog + configurator) would wrap
     under the tab bar before the 560px phone breakpoint. Collapse them into the ⋯
     overflow menu early so the bar always stays on one line. */
  @media(max-width:840px){
    .tabaux{display:none}
    .tabmore{display:flex;flex:0 0 auto}
  }

  /* ===== Compare tab: compact side-by-side view (tablet + phone) =====
     The desktop matrix table needs ~1050px to render its option chips without
     truncation, so between ~560–960px it overflows the page. Below 960px, hide it
     and show the always-present compact grid view (built alongside it in
     buildMatrix), whose repeat(3,minmax(0,1fr)) columns flex to fit and never
     overflow. Phones (≤560px) still match this block; the max-width:560px block
     below only layers on phone-specific tweaks. */
  @media(max-width:960px){
    /* compare: show the actual side-by-side before the image/config cards */
    #view-compare.active{display:flex;flex-direction:column}
    .compare-intro{order:1}
    .compare-matrix-panel{order:2;margin-top:0!important}
    #gearPanel{order:3}
    .compare-cards{order:4;margin-top:16px}
    .verdict{order:5}
    #cmpMatrix{overflow:visible}
    .matrixdesk{display:none}
    .mobile-cmp{display:block}
    /* full-bleed rows hug the desktop 20px panel padding; the 560px block below
       resets margin/padding to 14px for the phone panel */
    .mobile-cmp-visual,.mobile-cmp-head{grid-template-columns:repeat(3,minmax(0,1fr));gap:0;
      margin:0 -20px;padding:8px 20px;background:var(--panel);border-bottom:1px solid var(--line)}
    .mobile-cmp-visual{display:grid}
    .mobile-cmp-head{display:none}
    .mobile-cmp.show-sticky .mobile-cmp-head{display:grid}
    .mobile-cmp-visual{padding-top:12px}
    .mobile-cmp-head{position:sticky;top:0;z-index:6;box-shadow:0 5px 12px rgba(20,32,46,.06)}
    .mobile-cmp-headcell,.mobile-cmp-visualcell{min-width:0;padding:0 7px}
    .mobile-cmp-headcell+.mobile-cmp-headcell,.mobile-cmp-visualcell+.mobile-cmp-visualcell{border-left:1px solid var(--line)}
    .mobile-cmp-visualcell img{display:block;width:100%;height:34px;object-fit:contain;margin-bottom:2px}
    .mobile-cmp-headcell span,.mobile-cmp-visualcell span{display:block;min-width:0;font-size:10px;font-weight:800;letter-spacing:.08em;
      text-transform:uppercase;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .mobile-cmp-headcell b,.mobile-cmp-visualcell b{display:block;font-size:12.5px;line-height:1.15;color:var(--ink);
      font-variant-numeric:tabular-nums;white-space:nowrap}
    .mobile-cmp-divider{margin:13px -20px 0;padding:7px 20px;background:var(--panel2);
      color:var(--faint);font-size:10.5px;font-weight:800;letter-spacing:.08em;text-transform:uppercase}
    .mobile-cmp-row{padding:12px 0;border-bottom:1px solid var(--line)}
    .mobile-cmp-row:first-child{padding-top:0}
    .mobile-cmp-row:last-child{border-bottom:none}
    .mobile-cmp-label{font-size:12.5px;font-weight:700;color:var(--ink);line-height:1.25;margin-bottom:8px}
    .mobile-cmp-values{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0}
    .mobile-cmp-val{min-width:0;padding:1px 7px;color:var(--muted);font-size:12px;line-height:1.35}
    .mobile-cmp-val+.mobile-cmp-val{border-left:1px solid var(--line)}
    .mobile-cmp-trim{display:none;font-size:9.5px;font-weight:800;letter-spacing:.07em;text-transform:uppercase;color:var(--faint);margin-bottom:3px}
    .mobile-cmp-body{overflow-wrap:anywhere}
    .mobile-cmp-body .ttl{display:none}
    .mobile-cmp-val.yes{color:var(--sel);font-weight:700}
    .mobile-cmp-val.no{color:var(--faint)}
    .mobile-cmp-val.opt,.mobile-cmp-val.excl,.mobile-cmp-val.val{color:var(--ink)}
    .mobile-cmp-val svg{display:inline-block;vertical-align:-3px;margin-right:3px}
    .mobile-cmp-val small{display:block;font-size:9.5px;color:var(--faint);font-weight:500;margin-top:1px}
    .mobile-cmp-row.totalrow .mobile-cmp-label{color:var(--muted);font-size:11px;text-transform:uppercase;letter-spacing:.06em}
    .mobile-cmp-row.totalrow .ttlp{font-size:16px;letter-spacing:-.2px}
    .mobile-cmp-row.totalrow .ttld{font-size:9.5px}
    .mobile-cmp-row.totalrow .trcpt{display:none}
    .mobile-opt-group{padding:13px 0;border-bottom:1px solid var(--line)}
    .mobile-opt-list{display:flex;flex-direction:column;gap:10px}
    .mobile-opt-row{display:block}
    .mobile-opt-name{display:flex;align-items:center;gap:8px;min-width:0;margin-bottom:5px;
      font-size:12.5px;font-weight:700;color:var(--ink);line-height:1.25}
    .mobile-opt-swatch{width:18px;height:18px;border-radius:50%;border:1px solid var(--line2);overflow:hidden;
      flex:0 0 auto;background-size:cover;background-position:center;display:inline-grid;place-items:center}
    .mobile-opt-swatch.wheel{border-radius:5px;background:#e9eef3}
    .mobile-opt-swatch img{width:100%;height:100%;object-fit:cover;display:block}
    .mobile-opt-values{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0}
    .mobile-opt-cell{min-width:0;min-height:32px;padding:5px 6px;border:0;border-left:1px solid var(--line);
      background:transparent;color:var(--muted);font:inherit;font-size:11px;font-weight:700;line-height:1.2;
      text-align:left;display:flex;align-items:center;gap:3px;cursor:pointer}
    .mobile-opt-cell:first-child{border-left:0}
    .mobile-opt-cell:not(.na):not(.ro):hover{color:var(--ink);background:var(--panel2)}
    .mobile-opt-cell.sel{color:var(--sel);background:var(--sel-bg)}
    .mobile-opt-cell.na{color:var(--faint);font-weight:500;cursor:default}
    .mobile-opt-cell.ro{cursor:default}
    .mobile-opt-cell svg{flex:0 0 auto}
  }
  /* Compare compact view — tablet band only (561–960px): spend the extra width on
     larger trim thumbnails and roomier columns so it reads as intentional. */
  @media(min-width:561px) and (max-width:960px){
    .mobile-cmp-visualcell img{height:56px}
    .mobile-cmp-headcell,.mobile-cmp-visualcell,.mobile-cmp-val,.mobile-opt-cell{padding-left:12px;padding-right:12px}
  }

  /* ===================== MOBILE (phones) ===================== */
  @media(max-width:560px){
    .wrap{padding:16px 12px 72px}
    .panel{padding:14px}
    h1{font-size:21px}
    /* tab bar: scroll the pills horizontally; collapse aux links into the ⋯ menu */
    .tabbar{flex-wrap:nowrap}
    .tabs{width:auto;max-width:100%;min-width:0;flex-wrap:nowrap;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}
    .tabs::-webkit-scrollbar{display:none}
    .tab{flex:0 0 auto;padding:9px 13px;font-size:13.5px}
    .tabext{display:none}   /* shorten labels: "② Compare trims" → "② Compare", etc. */
    .tabaux{display:none}
    .tabmore{display:flex;flex:0 0 auto}
    /* once the grid stacks, don't let the summary/results panels pin over content */
    .sticky{position:static}
    /* tighten the upgrade-tree indent so cards aren't crushed */
    .nodes{padding-left:20px;gap:9px}
    /* trims: stack one-per-row (kill the 2-up + 1-alone wrap) and go horizontal
       so the now-full-width card uses its space. Keep row-direction + flex-basis:100%
       — flex-direction:column would turn flex-basis:150px into a height. */
    .trim{flex-basis:100%;display:grid;grid-template-columns:auto 1fr;
      grid-template-areas:"name specs" "price avail";
      align-items:center;column-gap:14px;row-gap:2px;padding-right:36px}
    .trim .tn{grid-area:name}
    .trim .tp{grid-area:price}
    .trim .ts{grid-area:specs;margin-top:0;text-align:right}
    .trim .av{grid-area:avail;margin-top:0;justify-self:end}
    /* padding-right reserves the top-right corner (the .sel check sits at right:10,
       19px wide) so the right-aligned specs/badge clear it with a comfortable gap */
    /* compare (phone): heading + Reset stack; full-bleed rows/dividers hug the
       14px phone panel padding (the compact-view switch lives in the 960px block above) */
    .compare-matrix-panel .h2row{align-items:flex-start;flex-direction:column}
    .compare-matrix-panel .h2row>div{width:100%;justify-content:space-between;gap:10px}
    .mobile-cmp-visual,.mobile-cmp-head{margin:0 -14px;padding:8px 14px}
    .mobile-cmp-divider{margin:13px -14px 0;padding:7px 14px}
    .vgrid{grid-template-columns:1fr}
    /* legibility bumps for the smallest text */
    .pill{font-size:12px}
    .kpi .kl{font-size:11px}
    .matrix{font-size:12.5px}
    /* larger touch targets */
    .swdot{width:30px;height:30px}
    .tgl{width:40px;height:24px}
    .tgl:after{width:18px;height:18px;top:3px;left:3px}
    .tgl.on:after{left:19px}
  }
  @media(max-width:420px){
    /* two-up tile grids collapse to one column on the narrowest phones */
    .statgrid,.kpigrid{grid-template-columns:1fr}
    /* trims: too narrow for the horizontal card — revert to stacked vertical
       content (still full-width/one-per-row via flex-basis:100% above) */
    .trim{display:block;padding-right:13px}
    .trim .ts{margin-top:7px;text-align:left}
    .trim .av{margin-top:8px}
  }
  @media(max-width:360px){
    /* very small phones: drop the ①②③ so "Build / Compare / Cost" fits without scroll */
    .tabnum{display:none}
  }

  /* ===================== DARK MODE (auto — follows the OS) =====================
     No toggle, no persistence, no data-theme. The whole stylesheet reads the
     :root vars, so overriding them here flips ~everything; the handful of rules
     with hardcoded colors (or that use var(--ink) as a background) are pinned
     just below. Image/render backings are left light on purpose. */
  @media (prefers-color-scheme: dark){
    :root{
      /* dark, cool-gray theme — mirrors the light palette's blue-gray hue */
      --bg:#0e1319; --panel:#161c24; --panel2:#1b222b; --panel3:#212a34;
      --line:#2a333e; --line2:#3a4552;
      --ink:#e6ecf2; --muted:#9aa7b4; --faint:#6b7885;
      --accent:#f4cf17;            /* unchanged — pops on dark; overlaid text stays hardcoded dark */
      --accent-deep:#e8c34a;       /* lightened: used as TEXT (.feat .k) */
      --sel:#3fb2c0;               /* brighter teal for dark */
      --sel-bg:#123039;            /* dark teal tint */
      --good:#3cc274; --warn:#d9a63a; --bad:#e8635d;
      --sh:0 1px 2px rgba(0,0,0,.45), 0 3px 10px rgba(0,0,0,.38);
      --sh2:0 2px 6px rgba(0,0,0,.5), 0 10px 24px rgba(0,0,0,.42);
    }
    /* select chevron is a hardcoded-color SVG → repaint in the dark muted tone */
    select{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239aa7b4' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E")}
    /* amber "highlight" boxes — light gradient + text that is now light → pin dark warm */
    .accentbox,.dedbox{background:linear-gradient(180deg,#26210f,#1f1b0b);border-color:#453c17}
    .dedbox .dl.save{border-top-color:#453c17}
    /* these use var(--ink) as a BACKGROUND (dark chip in the light UI); --ink is now
       light, so pin them dark to keep their hardcoded light text readable */
    .btn{background:#1d2733}     /* primary "See cost over time" CTA — keep its light-mode navy */
    .gear .tip{background:#1e2732}
    .gear .tip:after{border-top-color:#1e2732}
    /* hero caption sits over the render, which stays light — keep it dark-on-white */
    .hero .cap{color:#5c6a79;background:rgba(255,255,255,.72)}
    /* input-group bucket tags — lighten text for dark surfaces */
    .igtag.t-up{color:#e8c34a}
    .igtag.t-fin{color:#e8635d}
    .igtag.t-run{color:#3fb2c0}
    .igtag.t-back{color:#3cc274}
  }