/* Solar Pilot-e proposal v4 - Tesla design language: white/black, blue #3e6ae1 accent only, 4px buttons, restrained type */
:root{
  --ink:#171a20; --body:#393c41; --muted:#5c5e62; --line:#d0d1d2;
  --grey:#f4f4f4; --blue:#3e6ae1; --blue2:#3457b1;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-snap-type:y proximity;scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  font-size:14px;color:var(--body);background:#fff;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
img{display:block;max-width:100%}

/* ---------- top nav ---------- */
.topbar{position:fixed;top:0;left:0;right:0;z-index:50;display:flex;align-items:center;
  padding:0 32px;height:52px;color:#fff;transition:background .25s,color .25s}
.topbar .brand{display:inline-flex;align-items:center;gap:8px;font-weight:500;font-size:15px;letter-spacing:.12em}
.topbar .brand .bmark{height:18px;width:18px;fill:currentColor;flex:none}
.topbar .brand .ge{color:#2fc0b4}
.topbar .menu{display:flex;gap:28px;margin:0 auto}
.topbar .menu a{font-size:14px;font-weight:500;opacity:.9}
.topbar .menu a:hover{opacity:1}
.topbar .topspacer{width:80px}
.topbar.solid{background:rgba(255,255,255,.85);backdrop-filter:blur(12px);color:var(--ink);
  box-shadow:0 1px 0 rgba(0,0,0,.06)}
@media (max-width:760px){.topbar .menu,.topbar .topspacer{display:none}.topbar{justify-content:center}}

/* ---------- sections ---------- */
.tsec{position:relative;min-height:100svh;display:flex;flex-direction:column;
  justify-content:space-between;scroll-snap-align:start;overflow:hidden;padding:96px 24px 40px}
.tsec.tall{min-height:max(100svh,860px);height:auto;overflow:visible;padding:80px 0 0}
.tsec.white{background:#fff}
.tsec.grey{background:var(--grey)}
.tsec.black{background:#000;color:#fff}
.tsec.img .bg.cover{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.grad{position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg,rgba(0,0,0,.42) 0%,rgba(0,0,0,.08) 34%,rgba(0,0,0,.02) 55%,rgba(0,0,0,.34) 100%)}
.grad.strong{background:linear-gradient(180deg,rgba(0,0,0,.55) 0%,rgba(0,0,0,.18) 34%,rgba(0,0,0,.1) 55%,rgba(0,0,0,.55) 100%)}
.tsec .head,.tsec .mid,.tsec .bot{position:relative;z-index:2}
.tsec .head{text-align:center}
.tsec .mid{display:flex;justify-content:center;padding:24px 0}
.tsec .bot{text-align:center}

/* type */
h1{font-size:40px;font-weight:500;color:#fff;letter-spacing:-.5px}
h2{font-size:28px;font-weight:500;color:var(--ink);letter-spacing:-.3px}
.tsec.black h2,.tsec.dark h2{color:#fff}
.sub{margin-top:8px;font-size:17px;color:var(--muted)}
.tsec.black .sub,.tsec.dark .sub,.tsec.img .sub{color:rgba(255,255,255,.92)}
h1+.sub{color:rgba(255,255,255,.95)}
h3{font-size:17px;font-weight:500;color:var(--ink)}
@media (max-width:760px){h1{font-size:30px}h2{font-size:24px}.sub{font-size:15px}}

/* buttons - Tesla: 4px radius, 14px/500, min-width 220 */
.btn{display:inline-flex;align-items:center;justify-content:center;min-width:220px;height:40px;
  padding:0 24px;border:0;border-radius:4px;font-size:14px;font-weight:500;letter-spacing:.2px;
  cursor:pointer;font-family:inherit;transition:background .2s}
.btn.primary{background:var(--blue);color:#fff}
.btn.primary:hover{background:var(--blue2)}
.btn.white{background:rgba(255,255,255,.68);backdrop-filter:blur(14px);color:var(--ink)}
.btn.white:hover{background:rgba(255,255,255,.85)}
.btn.ghost{background:rgba(60,60,60,.85);color:#fff}
.btn.ghost:hover{background:rgba(80,80,80,.9)}
.btn.dark{background:var(--ink);color:#fff}
.btn.dark:hover{background:#393c41}
.ctas{display:flex;gap:16px;justify-content:center;margin-top:22px;flex-wrap:wrap}

/* spec trio - Tesla: number+unit inline, caption below, thin dividers */
.trio{display:flex;justify-content:center;align-items:flex-start;max-width:900px;margin:0 auto}
.tri{padding:0 28px;border-left:1px solid var(--line);flex:1;max-width:300px}
.tri:first-child{border-left:0}
.tri b{display:block;font-size:28px;font-weight:500;color:var(--ink);letter-spacing:-.3px}
.tri b small{font-size:14px;font-weight:500}
.tri span{display:block;margin-top:4px;font-size:14px;color:var(--muted)}
.trio.dark .tri{border-left-color:rgba(255,255,255,.28)}
.trio.dark .tri b{color:#fff}
.trio.dark .tri span{color:rgba(255,255,255,.85)}
.trio.small .tri b{font-size:20px}
.trio.small .tri span{font-size:12px}
.muted-t{color:var(--muted)!important;font-size:22px!important}
.w-muted{color:rgba(255,255,255,.7)!important;font-size:22px!important}
.trio .tri b.sm{font-size:20px!important}
@media (max-width:760px){
  .trio{flex-wrap:wrap;gap:18px 0}
  .tri{padding:0 14px}
  .tri b{font-size:22px}
}

/* plates (charts / diagrams) */
.plate{max-width:min(760px,88vw);border-radius:8px}

/* cards - Tesla grey cards */
.cards{display:flex;gap:24px;justify-content:center;max-width:1000px;margin:0 auto;padding:0 8px}
.card{flex:1;background:var(--grey);border-radius:8px;padding:28px 24px;text-align:left}
.card h3{margin-bottom:10px}
.card p{font-size:14px;line-height:1.5;color:var(--muted)}
@media (max-width:760px){.cards{flex-direction:column;max-width:520px}}

/* projection */
.proj{max-width:760px;width:100%;margin:0 auto;padding:0 8px}
.projbars{display:flex;gap:10px;align-items:flex-end;height:170px;border-bottom:1px solid var(--line);padding-bottom:0}
.pbar{flex:1;background:var(--ink);border-radius:2px 2px 0 0;position:relative;min-height:24px}
.pbar em{position:absolute;top:-20px;left:0;right:0;font-style:normal;font-size:11px;color:var(--muted)}
.pbar span{position:absolute;bottom:-22px;left:0;right:0;font-size:12px;color:var(--muted)}
.assume{margin-top:44px;text-align:left}
.assume-k{font-size:12px;font-weight:600;letter-spacing:1.5px;text-transform:uppercase;color:var(--muted);margin-bottom:10px}
.assume ul{list-style:none}
.assume li{font-size:13px;color:var(--muted);padding:4px 0 4px 14px;position:relative}
.assume li:before{content:"";position:absolute;left:0;top:11px;width:5px;height:5px;border-radius:50%;background:var(--line)}

/* ---------- order page (configurator) ---------- */
.design{display:grid;grid-template-columns:1fr 420px;gap:40px;max-width:1160px;margin:0 auto;
  padding:0 32px 120px;align-items:start}
.design-visual{position:sticky;top:80px}
.design-visual img{border-radius:8px;width:100%}
.dv-cap{margin-top:10px;font-size:12px;color:var(--muted)}
.design-panel{text-align:center}
.design-panel h2{font-size:28px}
.optlist,#optlist{margin-top:26px;text-align:left}
.opt{background:#fff;border:1px solid var(--line);border-radius:8px;padding:16px 18px;margin-bottom:12px;
  cursor:pointer;display:flex;align-items:flex-start;gap:14px;transition:border-color .15s}
.opt:hover{border-color:#8e8e8e}
.opt.on{border:2px solid var(--ink);padding:15px 17px}
.opt .radio{flex:none;width:16px;height:16px;border:1px solid #8e8e8e;border-radius:50%;margin-top:2px;position:relative}
.opt.on .radio{border-color:var(--ink)}
.opt.on .radio:after{content:"";position:absolute;inset:3px;border-radius:50%;background:var(--ink)}
.opt .ob{flex:1}
.opt .oname{font-size:14px;font-weight:500;color:var(--ink)}
.opt .osub{font-size:12px;color:var(--muted);margin-top:2px}
.opt .oprice{font-size:14px;color:var(--muted);white-space:nowrap}
.opt .ospecs{margin-top:10px;padding-top:10px;border-top:1px solid var(--grey);font-size:12px;color:var(--muted);
  line-height:1.6;display:none}
.opt.on .ospecs{display:block}
@media (max-width:900px){
  .design{grid-template-columns:1fr;padding:0 20px 150px}
  .design-visual{position:static}
}
.orderbar{position:sticky;bottom:0;z-index:20;background:#fff;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 32px}
.ob-left b{display:block;font-size:14px;font-weight:500;color:var(--ink)}
.ob-left span{font-size:12px;color:var(--muted)}
.ob-right{display:flex;align-items:center;gap:20px}
.ob-price{font-size:14px;color:var(--body)}
@media (max-width:760px){
  .orderbar{flex-direction:column;align-items:stretch;gap:8px;padding:12px 20px}
  .ob-right{justify-content:space-between;gap:12px}
  .ob-right .btn{min-width:0;padding-left:20px;padding-right:20px}
  .obfull{display:none}
}

/* ---------- final / review ---------- */
.final .head{margin:auto 0}
.review{position:relative;z-index:2;max-width:560px;margin:24px auto 0;padding:0 8px}
.revcard{background:var(--grey);border-radius:8px;padding:28px;text-align:left}
.revcard h3{margin-bottom:16px}
.revrow{display:flex;justify-content:space-between;gap:16px;padding:10px 0;border-bottom:1px solid #e5e5e5;font-size:14px}
.revrow span{color:var(--muted)}
.revrow b{font-weight:500;color:var(--ink);text-align:right}
.revrow b.muted-t{font-size:14px!important}
.revnote{margin:16px 0 4px;font-size:13px;color:var(--muted)}
.revcard .ctas{margin-top:18px}

/* pricing + financials */
.fintop{position:relative;z-index:2;max-width:860px;margin:8px auto 0;width:100%}
.fintop .tri span{font-size:12px}
.pricewrap{max-width:720px;width:100%;margin:0 auto;text-align:left}
.prblock{margin-bottom:28px}
.prow.total b{font-weight:600;color:var(--ink);font-size:16px}
.prow.total span{font-weight:500;color:var(--ink)}
.wtrio{margin-top:8px}
ul.incl{list-style:none;columns:2;column-gap:32px;font-size:13px;color:var(--muted);line-height:2}
ul.incl li:before{content:"-  "}
@media (max-width:640px){ul.incl{columns:1}}
.fine{font-size:12px;color:#a2a3a5;line-height:1.7;margin-top:8px}
.obp{color:var(--ink);font-weight:600}
.revsub{display:block;font-size:11px;color:var(--muted);font-weight:400}

/* footer */
.foot{background:#fff;border-top:1px solid var(--grey);padding:40px 24px;max-width:860px;margin:0 auto}
.foot p{font-size:12px;color:var(--muted);line-height:1.6;margin-bottom:12px}
.foot .ver{color:#a2a3a5}

/* short viewports */
@media (max-height:820px){
  .tsec{padding-top:80px;padding-bottom:24px}
  .tri b{font-size:24px}
  .tsec .mid{padding:12px 0}
}

.opt .oname{display:block}
.opt .osub{display:block}
.ob-right .btn{flex:none}
@media (max-width:760px){
  .pbar em{display:none}
  .ob-price{white-space:nowrap}
}
.ob-price .muted-t{font-size:14px!important}