/* multipolemagnets.com — "The Coded Magnet Review" design system
   Light technical-editorial. Distinct from multipolemag.com (dark+amber). */
:root{
  --paper:#F3F4F1;
  --paper-2:#EAECE6;
  --card:#FFFFFF;
  --ink:#15171C;
  --ink-2:#2A2D35;
  --muted:#5A5F6B;
  --line:#D9DCD3;
  --line-2:#C8CCC0;
  --indigo:#4A3DD4;
  --indigo-deep:#372CA8;
  --indigo-soft:#EDEBFB;
  --film:#1E7D5C;
  --film-soft:#E4F1EA;
  --n:#D93D4A;
  --s:#2B5FD9;
  --amberlink:#B07100; /* only for the companion-site cross-link cue */
  --radius:14px;
  --maxw:1180px;
  --ease:cubic-bezier(.22,.68,.24,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
}
body{
  background:var(--paper);color:var(--ink);
  font-family:'Archivo',system-ui,sans-serif;
  font-size:1rem;line-height:1.65;-webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,.display{font-family:'Newsreader',Georgia,serif;font-weight:500;line-height:1.08;letter-spacing:-.015em}
h1 em,h2 em,.display em{font-style:italic;font-weight:500;color:var(--indigo)}
.mono{font-family:'Spline Sans Mono',ui-monospace,monospace}
a{color:inherit}
:focus-visible{outline:2px solid var(--indigo);outline-offset:2px;border-radius:2px}
::selection{background:var(--indigo);color:#fff}
img,svg{max-width:100%}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---- eyebrow / labels ---- */
.eyebrow{
  font-family:'Archivo',sans-serif;font-weight:700;font-size:.72rem;
  letter-spacing:.26em;text-transform:uppercase;color:var(--indigo);
  display:inline-flex;align-items:center;gap:.55rem;
}
.eyebrow::before{
  content:"";width:14px;height:14px;flex:0 0 auto;
  background:
    conic-gradient(var(--n) 0 25%,var(--s) 0 50%,var(--s) 0 75%,var(--n) 0);
  border-radius:3px;opacity:.9;
}
.dsg{font-family:'Spline Sans Mono',monospace;font-size:.72rem;letter-spacing:.08em;color:var(--muted)}

/* ---- evidence tags ---- */
.tag{display:inline-flex;align-items:center;gap:.35rem;font-family:'Spline Sans Mono',monospace;
  font-size:.68rem;letter-spacing:.06em;padding:.2rem .6rem;border-radius:999px;white-space:nowrap}
.tag::before{content:"";width:7px;height:7px;border-radius:50%}
.tag.shipping{background:var(--film-soft);color:var(--film)}
.tag.shipping::before{background:var(--film)}
.tag.demonstrated{background:var(--indigo-soft);color:var(--indigo-deep)}
.tag.demonstrated::before{background:var(--indigo)}
.tag.illustrative{background:transparent;color:var(--muted);border:1px dashed var(--line-2)}
.tag.illustrative::before{background:var(--muted)}
.tag.vendor{background:#FBF3E4;color:#8A5A00}
.tag.vendor::before{background:#C98A0B}

/* ---- nav ---- */
header.nav{position:sticky;top:0;z-index:90;background:rgba(243,244,241,.88);
  backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px;gap:1.2rem}
.brand{display:flex;align-items:center;gap:.65rem;text-decoration:none}
.brand .mark{width:30px;height:30px;border-radius:7px;flex:0 0 auto;border:1px solid var(--line-2);
  background:
    linear-gradient(0deg,transparent 0,transparent 100%),
    repeating-conic-gradient(var(--n) 0 25%,var(--s) 0 50%) 0 0/15px 15px;
}
.brand b{font-family:'Newsreader',serif;font-weight:600;font-size:1.2rem;letter-spacing:-.01em}
.brand small{display:block;font-family:'Spline Sans Mono',monospace;font-size:.56rem;letter-spacing:.22em;color:var(--muted);text-transform:uppercase;margin-top:-3px}
.nav-links{display:flex;gap:1.6rem;align-items:center}
.nav-links a{font-size:.9rem;font-weight:500;color:var(--muted);text-decoration:none;transition:color .2s}
.nav-links a:hover,.nav-links a[aria-current]{color:var(--ink)}
.nav-links a[aria-current]{color:var(--indigo)}
.menu-toggle{display:none;background:none;border:1px solid var(--line-2);border-radius:9px;width:40px;height:40px;font-size:1.15rem;cursor:pointer;color:var(--ink)}
@media(max-width:900px){
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;background:var(--paper);
    border-bottom:1px solid var(--line);flex-direction:column;align-items:flex-start;
    padding:1rem 24px 1.4rem;gap:1rem}
  .nav-links.open{display:flex}
  .menu-toggle{display:block}
}

/* ---- breadcrumbs ---- */
.crumbs{font-family:'Spline Sans Mono',monospace;font-size:.72rem;letter-spacing:.04em;color:var(--muted);padding:1.1rem 0 0}
.crumbs a{color:var(--muted);text-decoration:none}
.crumbs a:hover{color:var(--indigo)}
.crumbs span{color:var(--line-2);padding:0 .35rem}

/* ---- hero / page head ---- */
.pagehead{padding:clamp(2.2rem,5vw,4rem) 0 clamp(1.6rem,3vw,2.6rem)}
.pagehead h1{font-size:clamp(2.3rem,5.4vw,3.9rem);max-width:22ch;margin:.9rem 0 1rem}
.pagehead .lede{font-size:clamp(1.02rem,1.5vw,1.22rem);color:var(--muted);max-width:62ch}
.lede{font-size:1.1rem;color:var(--muted)}

/* ---- sections ---- */
section.band{padding:clamp(2.4rem,5vw,4.4rem) 0}
section.band.alt{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.band h2{font-size:clamp(1.7rem,3.4vw,2.5rem);margin:.8rem 0 1rem;max-width:26ch}
.band .sub{color:var(--muted);max-width:66ch;margin-bottom:1.8rem}

/* ---- split layouts ---- */
.split{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(2rem,4vw,4rem);align-items:center}
.split.even{grid-template-columns:1fr 1fr;gap:clamp(2rem,4vw,3.5rem)}
.split.top{align-items:start}
@media(max-width:880px){.split,.split.even{grid-template-columns:1fr}}
.drivers{display:grid;grid-template-columns:1fr 1fr;gap:1.4rem}
@media(max-width:880px){.drivers{grid-template-columns:1fr}}

/* ---- cards / grids ---- */
.grid{display:grid;gap:1.1rem}
.grid.c2{grid-template-columns:repeat(2,1fr)}
.grid.c3{grid-template-columns:repeat(3,1fr)}
.grid.c4{grid-template-columns:repeat(4,1fr)}
@media(max-width:980px){.grid.c3,.grid.c4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.grid.c2,.grid.c3,.grid.c4{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:1.35rem 1.35rem 1.25rem;position:relative;transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s}
a.card{text-decoration:none;display:block}
a.card:hover{transform:translateY(-3px);box-shadow:0 14px 34px -18px rgba(21,23,28,.28);border-color:var(--line-2)}
.card h3{font-size:1.28rem;margin:.5rem 0 .45rem}
.card p{font-size:.92rem;color:var(--muted)}
.card .kicker{font-family:'Spline Sans Mono',monospace;font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;color:var(--indigo)}
.card .go{font-family:'Spline Sans Mono',monospace;font-size:.72rem;color:var(--indigo);margin-top:.8rem;display:inline-block}

/* ---- stat blocks ---- */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.stat{background:var(--card);padding:1rem 1.1rem}
.stat b{display:block;font-family:'Spline Sans Mono',monospace;font-size:1.35rem;font-weight:600;letter-spacing:-.02em}
.stat span{font-size:.74rem;color:var(--muted);line-height:1.4;display:block;margin-top:.15rem}
.stat .src{font-family:'Spline Sans Mono',monospace;font-size:.6rem;color:var(--indigo);letter-spacing:.05em}

/* ---- buttons ---- */
.btn{display:inline-flex;align-items:center;gap:.55rem;font-weight:600;font-size:.92rem;
  padding:.8rem 1.35rem;border-radius:999px;text-decoration:none;cursor:pointer;border:1px solid transparent;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease)}
.btn-primary{background:var(--indigo);color:#fff;box-shadow:0 10px 26px -12px rgba(74,61,212,.55)}
.btn-primary:hover{transform:translateY(-2px);background:var(--indigo-deep)}
.btn-ghost{border-color:var(--line-2);color:var(--ink);background:transparent}
.btn-ghost:hover{border-color:var(--indigo);transform:translateY(-2px)}

/* ---- maxel grid (signature) ---- */
.maxel{display:grid;gap:3px;width:max-content}
.maxel i{width:14px;height:14px;border-radius:3px;background:var(--paper-2);transition:background .3s var(--ease),transform .3s var(--ease)}
.maxel i.n{background:var(--n)}
.maxel i.s{background:var(--s)}
.maxel i.pending{transform:scale(.4);background:var(--paper-2)}
.maxel.lg i{width:20px;height:20px;border-radius:4px}
@media(max-width:640px){.maxel.lg i{width:13px;height:13px}}

/* ---- figure / curve ---- */
.fig{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:1.2rem;margin:1.2rem 0}
.fig figcaption{font-family:'Spline Sans Mono',monospace;font-size:.7rem;color:var(--muted);margin-top:.7rem;letter-spacing:.03em}
.curve svg{display:block;width:100%;height:auto}

/* ---- prose ---- */
.prose{max-width:70ch}
.prose p{margin:0 0 1.1rem;color:var(--ink-2)}
.prose h2{font-size:clamp(1.5rem,2.8vw,2.1rem);margin:2.4rem 0 .9rem}
.prose h3{font-size:1.25rem;margin:1.8rem 0 .6rem;font-family:'Archivo';font-weight:700;letter-spacing:0}
.prose ul,.prose ol{margin:0 0 1.1rem 1.2rem;color:var(--ink-2)}
.prose li{margin-bottom:.45rem}
.prose a{color:var(--indigo);text-decoration:underline;text-decoration-color:rgba(74,61,212,.35);text-underline-offset:3px}
.prose a:hover{text-decoration-color:var(--indigo)}
.prose blockquote{border-left:3px solid var(--indigo);padding:.2rem 0 .2rem 1.1rem;margin:1.4rem 0;color:var(--muted);font-family:'Newsreader',serif;font-size:1.12rem;font-style:italic}
.note{background:var(--indigo-soft);border:1px solid #D8D3F4;border-radius:var(--radius);padding:1.1rem 1.25rem;font-size:.92rem;color:var(--ink-2);margin:1.3rem 0}
.note b{color:var(--indigo-deep)}
.caveat{background:#FBF3E4;border:1px solid #EAD9B0;border-radius:var(--radius);padding:1.1rem 1.25rem;font-size:.92rem;color:#5C4508;margin:1.3rem 0}

/* ---- example rows (application pages) ---- */
.ex{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:1.3rem 1.4rem;margin-bottom:1rem}
.ex .exhead{display:flex;align-items:baseline;gap:.8rem;flex-wrap:wrap;margin-bottom:.5rem}
.ex h3{font-size:1.3rem}
.ex p{font-size:.95rem;color:var(--ink-2)}
.ex .why{margin-top:.7rem;font-size:.85rem;color:var(--muted)}
.ex .why b{color:var(--indigo-deep);font-family:'Spline Sans Mono',monospace;font-weight:500;font-size:.72rem;letter-spacing:.1em;text-transform:uppercase}

/* ---- behavior explorer ---- */
.explorer{display:grid;grid-template-columns:280px 1fr;gap:1.4rem;align-items:start}
@media(max-width:900px){.explorer{grid-template-columns:1fr}}
.exp-list{display:flex;flex-direction:column;gap:.5rem;position:sticky;top:84px}
@media(max-width:900px){.exp-list{position:static;flex-direction:row;flex-wrap:wrap}}
.exp-btn{display:flex;align-items:center;gap:.7rem;text-align:left;background:var(--card);border:1px solid var(--line);
  border-radius:12px;padding:.75rem .95rem;cursor:pointer;font-family:'Archivo';font-weight:600;font-size:.92rem;color:var(--ink);
  transition:border-color .2s,background .2s}
.exp-btn:hover{border-color:var(--indigo)}
.exp-btn[aria-selected="true"]{border-color:var(--indigo);background:var(--indigo-soft);color:var(--indigo-deep)}
.exp-btn .mini{width:22px;height:22px;border-radius:5px;flex:0 0 auto}
.exp-panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:1.6rem;display:none}
.exp-panel.active{display:block;animation:fadein .35s var(--ease)}
@keyframes fadein{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.exp-panel h3{font-size:1.6rem;margin-bottom:.4rem}
.exp-panel .mech{color:var(--ink-2);font-size:.97rem;max-width:64ch;margin:.6rem 0 1rem}
.exp-panel .uses{margin-top:1rem;font-size:.88rem}
.exp-panel .uses a{color:var(--indigo)}

/* ---- video ---- */
.video{position:relative;aspect-ratio:16/9;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:#000}
.video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}

/* ---- companion strip ---- */
.companion{display:flex;align-items:center;gap:1rem;background:#17181D;color:#F3F4F1;border-radius:var(--radius);padding:1.2rem 1.4rem;margin:1.5rem 0;flex-wrap:wrap}
.companion .cdot{width:12px;height:12px;border-radius:3px;background:#FFB12E;flex:0 0 auto}
.companion p{font-size:.92rem;color:#B9BCC6;flex:1;min-width:240px}
.companion a{color:#FFB12E;font-weight:600;text-decoration:none;white-space:nowrap}
.companion a:hover{text-decoration:underline}

/* ---- tables ---- */
table.spec{width:100%;border-collapse:collapse;font-size:.9rem;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
table.spec th{font-family:'Spline Sans Mono',monospace;font-weight:500;font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);text-align:left;padding:.7rem .9rem;border-bottom:1px solid var(--line);background:var(--paper-2)}
table.spec td{padding:.7rem .9rem;border-bottom:1px solid var(--line);vertical-align:top}
table.spec tr:last-child td{border-bottom:0}
table.spec td.mono,table.spec .mono{font-family:'Spline Sans Mono',monospace;font-size:.82rem}
.tablewrap{overflow-x:auto;border-radius:var(--radius)}

/* ---- FAQ ---- */
details.faq{background:var(--card);border:1px solid var(--line);border-radius:12px;margin-bottom:.7rem;overflow:hidden}
details.faq summary{cursor:pointer;padding:1rem 1.2rem;font-weight:600;font-size:1rem;list-style:none;display:flex;justify-content:space-between;gap:1rem;align-items:center}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";font-family:'Spline Sans Mono';color:var(--indigo);font-size:1.15rem}
details.faq[open] summary::after{content:"−"}
details.faq .a{padding:0 1.2rem 1.1rem;color:var(--ink-2);font-size:.94rem}
details.faq .a a{color:var(--indigo)}

/* ---- glossary ---- */
dl.gloss dt{font-family:'Newsreader',serif;font-weight:600;font-size:1.2rem;margin-top:1.4rem}
dl.gloss dt .dsg{margin-left:.5rem}
dl.gloss dd{color:var(--ink-2);font-size:.94rem;margin-top:.25rem;max-width:70ch}

/* ---- footer ---- */
footer.site{background:#15171C;color:#C9CCD4;margin-top:4rem;padding:3rem 0 2.2rem}
footer.site .fgrid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:2rem}
@media(max-width:860px){footer.site .fgrid{grid-template-columns:1fr 1fr}}
@media(max-width:520px){footer.site .fgrid{grid-template-columns:1fr}}
footer.site h4{font-family:'Spline Sans Mono',monospace;font-size:.68rem;font-weight:500;letter-spacing:.2em;text-transform:uppercase;color:#7E828E;margin-bottom:.8rem}
footer.site a{color:#C9CCD4;text-decoration:none;font-size:.88rem;display:block;margin-bottom:.45rem}
footer.site a:hover{color:#fff}
footer.site .fbrand{font-family:'Newsreader',serif;font-size:1.3rem;color:#fff;font-weight:600}
footer.site .fbrand em{color:#9B8CFF;font-style:italic}
footer.site p{font-size:.82rem;color:#8A8E99;max-width:44ch;margin-top:.6rem}
footer.site .legal{border-top:1px solid #2A2D35;margin-top:2.2rem;padding-top:1.3rem;font-family:'Spline Sans Mono',monospace;font-size:.66rem;color:#6E7280;letter-spacing:.05em;display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap}
footer.site .legal a{display:inline;font-size:.66rem;color:#8A8E99;margin:0 .5rem 0 0}

/* ---- reveal on scroll ---- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none}}