/* Alebra Group — design system
   Ink blue #273494 · Signal red #EB1C22 · Paper white
   Type: Archivo (display) · Spectral (serif body) · IBM Plex Mono (labels) */

:root{
  --ink:#0E1330;
  --blue:#273494;
  --blue-deep:#1B2468;
  --blue-soft:#3A47B0;
  --red:#EB1C22;
  --paper:#FFFFFF;
  --surface:#F4F5FA;
  --surface-2:#E9EBF5;
  --muted:#5B6076;
  --muted-2:#878BA0;
  --line:rgba(39,52,148,.14);
  --line-strong:rgba(39,52,148,.28);
  --line-on-blue:rgba(255,255,255,.18);

  --display:"Archivo",system-ui,sans-serif;
  --serif:"Spectral",Georgia,serif;
  --mono:"IBM Plex Mono",ui-monospace,monospace;

  --maxw:1240px;
  --gutter:clamp(20px,5vw,72px);
  --notch:14px; /* clipped-corner motif derived from the AG monogram */
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--serif);
  font-size:18px;
  line-height:1.65;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
::selection{background:var(--red);color:#fff}

/* ---------- type ---------- */
h1,h2,h3,h4{font-family:var(--display);font-weight:600;line-height:1.04;margin:0;letter-spacing:-.01em}
h1{font-size:clamp(2.6rem,6.4vw,5.4rem)}
h2{font-size:clamp(1.9rem,4vw,3.1rem)}
h3{font-size:clamp(1.3rem,2.2vw,1.7rem)}
p{margin:0 0 1.1em}
.lede{font-size:clamp(1.18rem,2vw,1.5rem);line-height:1.5;color:var(--ink)}

.eyebrow{
  font-family:var(--mono);
  font-size:.72rem;
  letter-spacing:.26em;
  text-transform:uppercase;
  font-weight:500;
  color:var(--muted);
  display:inline-flex;align-items:center;gap:.7em;
}
.eyebrow::before{
  content:"";width:9px;height:9px;background:var(--red);
  clip-path:polygon(0 0,100% 0,100% 65%,65% 100%,0 100%);
  display:inline-block;flex:none;
}
.eyebrow.on-blue{color:rgba(255,255,255,.62)}

/* ---------- layout ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding-inline:var(--gutter)}
section{padding-block:clamp(64px,9vw,128px)}
.tight{padding-block:clamp(48px,6vw,80px)}
.surface{background:var(--surface)}
.ink-bg{background:var(--blue);color:#fff}
.ink-bg .lede,.ink-bg h1,.ink-bg h2,.ink-bg h3{color:#fff}
.ink-bg p{color:rgba(255,255,255,.8)}

.grid{display:grid;gap:clamp(28px,4vw,64px)}
.col-2{grid-template-columns:repeat(2,1fr)}
.col-3{grid-template-columns:repeat(3,1fr)}
.split{grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);align-items:start}
@media(max-width:860px){.col-2,.col-3,.split{grid-template-columns:1fr}}

/* ---------- header ---------- */
.site-head{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.9);
  backdrop-filter:saturate(1.4) blur(10px);
  border-bottom:1px solid var(--line);
}
.head-row{display:flex;align-items:center;justify-content:space-between;gap:24px;height:74px}
.brand{display:flex;align-items:center;gap:12px}
.brand-tile{
  width:38px;height:38px;flex:none;
  background:var(--blue);
  display:flex;align-items:center;justify-content:center;
  clip-path:polygon(0 0,100% 0,100% calc(100% - var(--notch)),calc(100% - var(--notch)) 100%,0 100%);
}
.brand-tile img{width:30px;height:auto}
.brand-name{font-family:var(--display);font-weight:700;font-size:1.02rem;letter-spacing:.16em;text-transform:uppercase}
.brand-name span{color:var(--blue)}

.nav{display:flex;align-items:center;gap:clamp(14px,1.6vw,26px)}
.nav a{
  font-family:var(--mono);font-size:.76rem;letter-spacing:.13em;text-transform:uppercase;
  color:var(--muted);padding:6px 0;position:relative;transition:color .2s;
}
.nav a:hover,.nav a[aria-current]{color:var(--ink)}
.nav a[aria-current]::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--red);
}
.nav-cta{
  font-family:var(--mono);font-size:.74rem;letter-spacing:.13em;text-transform:uppercase;
  border:1px solid var(--line-strong);padding:9px 16px;color:var(--ink);
  transition:.2s;white-space:nowrap;
}
.nav-cta:hover{background:var(--blue);color:#fff;border-color:var(--blue)}
.menu-btn{display:none;background:none;border:0;font-family:var(--mono);font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;cursor:pointer;color:var(--ink)}

@media(max-width:1080px){
  .nav,.nav-cta{display:none}
  .menu-btn{display:block}
  .nav.open{
    display:flex;flex-direction:column;align-items:flex-start;gap:4px;
    position:absolute;left:0;right:0;top:74px;background:#fff;
    border-bottom:1px solid var(--line);padding:18px var(--gutter) 28px;
  }
  .nav.open a{font-size:.92rem;padding:10px 0;width:100%;border-bottom:1px solid var(--line)}
}

/* ---------- hero ---------- */
.hero{background:var(--blue);color:#fff;position:relative;overflow:hidden}
.hero::after{
  content:"";position:absolute;right:-6%;bottom:-14%;width:min(52vw,640px);height:min(52vw,640px);
  background:url("mark-transparent.png") right bottom/contain no-repeat;
  opacity:.07;pointer-events:none;
}
.hero .wrap{position:relative;z-index:1;padding-block:clamp(88px,15vw,180px)}
.hero h1{max-width:16ch;letter-spacing:-.02em}
.hero .lede{max-width:54ch;margin-top:1.6rem;color:rgba(255,255,255,.82)}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:28px 56px;margin-top:3rem;
  padding-top:2rem;border-top:1px solid var(--line-on-blue);
}
.hero-meta .k{font-family:var(--mono);font-size:.7rem;letter-spacing:.2em;text-transform:uppercase;color:rgba(255,255,255,.55);margin-bottom:.5em}
.hero-meta .v{font-family:var(--display);font-weight:600;font-size:1.05rem}

/* page header (interior) */
.page-head{background:var(--blue);color:#fff}
.page-head .wrap{padding-block:clamp(70px,11vw,130px)}
.page-head h1{font-size:clamp(2.2rem,5vw,4rem);max-width:18ch}
.page-head .lede{color:rgba(255,255,255,.82);max-width:50ch;margin-top:1.3rem}

/* ---------- register (signature element) ---------- */
.register{border-top:1px solid var(--line)}
.reg-row{
  display:grid;grid-template-columns:64px minmax(0,1fr) auto;gap:24px;align-items:baseline;
  padding:26px 0;border-bottom:1px solid var(--line);
  transition:padding-left .25s;position:relative;
}
.reg-row .idx{font-family:var(--mono);font-size:.8rem;color:var(--muted-2);letter-spacing:.05em}
.reg-row h3{font-size:clamp(1.2rem,2vw,1.55rem)}
.reg-row .desc{color:var(--muted);font-size:1rem;margin-top:.4em;max-width:60ch}
.reg-row .tag{font-family:var(--mono);font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;color:var(--blue);white-space:nowrap}
.reg-row .tag.dim{color:var(--muted-2)}
.reg-row.link{cursor:pointer}
.reg-row.link::before{
  content:"";position:absolute;left:-22px;top:30px;width:9px;height:9px;background:var(--red);opacity:0;transition:opacity .25s;
  clip-path:polygon(0 0,100% 0,100% 65%,65% 100%,0 100%);
}
.reg-row.link:hover{padding-left:14px}
.reg-row.link:hover::before{opacity:1}
@media(max-width:640px){
  .reg-row{grid-template-columns:40px 1fr;gap:14px}
  .reg-row .tag{grid-column:2;margin-top:.6em}
}

/* ---------- cards ---------- */
.card{
  background:var(--paper);border:1px solid var(--line);padding:34px 32px;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 22px),calc(100% - 22px) 100%,0 100%);
  transition:border-color .25s,transform .25s;
}
.card:hover{border-color:var(--line-strong);transform:translateY(-3px)}
.card .num{font-family:var(--mono);font-size:.78rem;letter-spacing:.18em;color:var(--red);margin-bottom:1.2em}
.card h3{margin-bottom:.5em}
.card p{color:var(--muted);font-size:1rem;margin:0}
.card.on-surface{background:#fff}

/* statement block */
.statement{font-family:var(--display);font-weight:500;font-size:clamp(1.6rem,3.4vw,2.7rem);line-height:1.18;letter-spacing:-.015em;max-width:20ch}
.statement em{font-style:normal;color:var(--red)}

/* definition list / facts */
.facts{border-top:1px solid var(--line)}
.facts div{display:flex;justify-content:space-between;gap:24px;padding:18px 0;border-bottom:1px solid var(--line)}
.facts dt{font-family:var(--mono);font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.facts dd{margin:0;font-family:var(--display);font-weight:500;font-size:1rem;text-align:right}

/* buttons */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;
  padding:14px 26px;border:1px solid var(--ink);color:var(--ink);transition:.2s;cursor:pointer;background:none;
}
.btn:hover{background:var(--ink);color:#fff}
.btn.primary{background:var(--red);border-color:var(--red);color:#fff}
.btn.primary:hover{background:#c4151a;border-color:#c4151a}
.btn.on-blue{border-color:rgba(255,255,255,.4);color:#fff}
.btn.on-blue:hover{background:#fff;color:var(--blue)}
.btn .arr{transition:transform .2s}
.btn:hover .arr{transform:translateX(4px)}

/* prose */
.prose{max-width:68ch}
.prose h2{margin:1.6em 0 .5em}
.prose h3{margin:1.4em 0 .4em;font-size:1.25rem}
.prose p{color:var(--ink)}
.prose ul{padding-left:0;list-style:none;margin:0 0 1.2em}
.prose li{position:relative;padding-left:28px;margin-bottom:.7em;color:var(--ink)}
.prose li::before{content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;background:var(--red);clip-path:polygon(0 0,100% 0,100% 65%,65% 100%,0 100%)}

/* ---------- forms ---------- */
.field{margin-bottom:22px}
.field label{display:block;font-family:var(--mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.field input,.field textarea,.field select{
  width:100%;font-family:var(--serif);font-size:1rem;color:var(--ink);
  background:#fff;border:1px solid var(--line-strong);padding:13px 14px;border-radius:0;
}
.field input:focus,.field textarea:focus,.field select:focus{outline:2px solid var(--blue);outline-offset:1px;border-color:var(--blue)}
.field textarea{min-height:140px;resize:vertical}

/* ---------- footer ---------- */
.site-foot{background:var(--ink);color:rgba(255,255,255,.72)}
.foot-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-block:64px;border-bottom:1px solid rgba(255,255,255,.1)}
@media(max-width:860px){.foot-top{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.foot-top{grid-template-columns:1fr}}
.foot-brand img{width:148px;margin-bottom:18px}
.foot-brand p{font-size:.96rem;max-width:34ch;color:rgba(255,255,255,.6)}
.foot-col h4{font-family:var(--mono);font-weight:500;font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;color:rgba(255,255,255,.45);margin-bottom:16px}
.foot-col a{display:block;font-family:var(--display);font-size:.98rem;padding:6px 0;color:rgba(255,255,255,.78);transition:color .2s}
.foot-col a:hover{color:#fff}
.foot-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;padding-block:26px;font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;color:rgba(255,255,255,.42)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .reg-row,.card,.btn .arr{transition:none}
  *{scroll-behavior:auto!important}
}

.skip{position:absolute;left:-999px}
.skip:focus{left:var(--gutter);top:10px;z-index:100;background:#fff;padding:8px 14px;border:1px solid var(--ink)}