:root{
  --void:#07090F; --surface:#0D1119; --line:#1B2130;
  --ink:#F2F5FA; --muted:#8E97A8; --dim:#59627A; --ind:#6366F1; --ind-lt:#A5B4FC;
  --sans:'Archivo',system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
body{background:var(--void);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.6;
  font-variation-settings:'wdth' 100,'wght' 400;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit}
:focus-visible{outline:2px solid var(--ind-lt);outline-offset:3px;border-radius:3px}
.shell{max-width:1000px;margin:0 auto;padding:0 32px}
@media(max-width:620px){.shell{padding:0 16px}}

nav{position:sticky;top:0;z-index:70;background:rgba(7,9,15,.78);backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:20px;height:66px}
.logo{display:flex;align-items:center;gap:11px;font-size:18px;text-decoration:none;
  font-variation-settings:'wdth' 108,'wght' 740;letter-spacing:-.03em}
.logo img{width:24px;height:24px;border-radius:6.5px}
.sp{flex:1}
.signin{color:var(--muted);text-decoration:none;font-size:15.5px}
.signin:hover{color:var(--ink)}
.btn{display:inline-flex;align-items:center;background:var(--ink);color:var(--void);text-decoration:none;
  font-variation-settings:'wght' 650;font-size:15.5px;padding:13px 24px;border-radius:7px;white-space:nowrap}
.btn:hover{background:var(--ind);color:#fff}
@media(max-width:420px){.signin{display:none}}

h1{font-size:clamp(40px,7vw,80px);line-height:.98;letter-spacing:-.045em;
  font-variation-settings:'wdth' 112,'wght' 760;padding-top:clamp(56px,9vw,104px)}
h2{font-size:clamp(26px,3.4vw,38px);line-height:1.08;letter-spacing:-.035em;
  font-variation-settings:'wdth' 112,'wght' 740;padding-top:76px;padding-bottom:18px}
h3{font-size:19px;font-variation-settings:'wght' 650;padding-bottom:6px}
.lead{font-size:clamp(18px,2vw,22px);line-height:1.5;color:var(--muted);max-width:52ch;padding-top:24px}
p{color:var(--muted);max-width:66ch}
p b{color:var(--ink);font-variation-settings:'wght' 600}
.meta{font-size:14px;color:var(--dim);padding-top:18px}

/* ---- price strip ---- */
.price{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:12px;overflow:hidden;
  margin-top:44px}
@media(min-width:700px){.price{grid-template-columns:1fr 1fr}}
.price > div{background:var(--surface);padding:22px 24px}
.price .who{font-size:14px;color:var(--muted);padding-bottom:4px}
.price .amt{font-size:30px;letter-spacing:-.03em;font-variation-settings:'wdth' 108,'wght' 720}
.price .amt small{font-size:15px;color:var(--muted);letter-spacing:0;font-variation-settings:'wght' 400}
.price p{font-size:15px;padding-top:6px}

/* ---- the chart: one glance per row ---- */
.legend{display:flex;flex-wrap:wrap;gap:8px 22px;font-size:14px;color:var(--muted);padding-bottom:14px}
.legend span{display:inline-flex;align-items:center;gap:7px}
table{width:100%;border-collapse:collapse;font-size:15.5px}
caption{text-align:left}
thead th{position:sticky;top:66px;background:var(--void);z-index:2;font-size:15px;
  font-variation-settings:'wdth' 108,'wght' 720;padding:12px 0;border-bottom:1px solid var(--line);text-align:center}
thead th:first-child{text-align:left}
tbody th{font-variation-settings:'wght' 500;text-align:left;padding:13px 16px 13px 0;color:var(--ink)}
tbody td{text-align:center;padding:13px 6px;width:24%;vertical-align:middle}
tbody tr{border-bottom:1px solid var(--line)}
tr.grp th{padding-top:30px;font-size:13px;color:var(--dim);font-variation-settings:'wght' 600;
  letter-spacing:.02em;border:0}
tr.grp{border:0}
.y,.n,.t{font-style:normal}
.y,.n{display:inline-grid;place-items:center;width:24px;height:24px;border-radius:99px;font-size:14px;line-height:1}
.y{background:rgba(99,102,241,.16);color:var(--ind-lt)}
.n{color:#3A4256;font-size:18px}
.t{display:inline-block;font-size:12.5px;padding:2px 9px;border-radius:99px;border:1px solid var(--line);color:var(--muted)}
.pl{display:block;font-size:12.5px;color:var(--dim);padding-top:3px;line-height:1.3}
td.us .pl{color:var(--muted)}
.note{font-size:14px;color:var(--dim);padding-top:16px;max-width:none}
@media(max-width:560px){
  tbody th{font-size:14.5px}
  tbody td{width:28%}
  .pl{font-size:11.5px}
}

/* ---- write-ups ---- */
.diffs{display:grid;gap:34px;padding-top:8px}
@media(min-width:760px){.diffs{grid-template-columns:1fr 1fr;gap:40px 48px}}
.diffs p + p{padding-top:10px}
blockquote{border-left:2px solid var(--ind);padding:2px 0 2px 16px;margin-top:12px;color:var(--ink);font-size:16px}
blockquote cite{display:block;font-style:normal;font-size:13.5px;color:var(--dim);padding-top:6px}
.better p + p{padding-top:12px}

details{border-bottom:1px solid var(--line)}
.faq{border-top:1px solid var(--line)}
summary{padding:20px 0;font-size:17px;font-variation-settings:'wght' 600;cursor:pointer;list-style:none;
  display:flex;gap:16px;align-items:center}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";margin-left:auto;color:var(--ind-lt);font-size:22px;transition:transform .2s ease}
details[open] summary::after{transform:rotate(45deg)}
details p{font-size:16px;padding-bottom:22px}

.close{padding:88px 0 96px}
.close h2{padding-top:0}
footer{border-top:1px solid var(--line);padding:30px 0;font-size:13.5px;color:#4C5566}
footer .shell{display:flex;gap:18px;flex-wrap:wrap}
footer b{color:var(--muted)}
footer a{color:var(--muted);text-decoration:none}
footer a:hover{text-decoration:underline;text-underline-offset:3px}
@media(prefers-reduced-motion:reduce){summary::after{transition:none}}
/* index page */
.cards{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:12px;overflow:hidden;margin-top:40px}
@media(min-width:700px){.cards{grid-template-columns:1fr 1fr}}
.cards a{display:block;background:var(--surface);padding:24px;text-decoration:none}
.cards a:hover{background:#111726}
.cards b{display:block;font-size:20px;letter-spacing:-.02em;font-variation-settings:'wdth' 108,'wght' 700}
.cards span{display:block;color:var(--muted);font-size:15px;padding-top:6px}
footer .cmp{color:var(--muted)}