/* ==========================================================================
   STEMBridge Learning Academy — academic design system
   Palette: navy base + amber accent (both from the Option-1 "bridge & atom" logo)
   Author: Summit Automates.  One stylesheet, :root tokens, no external fonts.
   ========================================================================== */

:root{
  /* --- navy base (from logo badge gradient #122C4E / #3E76B8) --- */
  --navy:#12294A;
  --navy-900:#0A1B33;
  --navy-800:#0E2340;
  --navy-700:#173257;
  --navy-600:#1F3F6B;
  --navy-500:#3E76B8;

  /* --- amber accent (from logo #E8A93C / #B9781E) --- */
  --amber:#E8A93C;
  --amber-600:#CE9130;
  --amber-700:#B9781E;
  --amber-050:#FBF0DA;

  /* --- steel-blue (links / secondary accent, from logo #3E76B8) --- */
  --steel:#3E76B8;
  --steel-700:#2E5D95;
  --steel-800:#234A7C;
  --steel-050:#EAF1F9;

  /* --- neutrals / text --- */
  --slate:#5B7699;
  --ink:#1B2430;
  --ink-70:#454F5E;
  --ink-55:#5F6B7A;
  --line:#D8E0E9;
  --line-2:#E6ECF2;

  /* --- surfaces --- */
  --canvas:#F5F8FB;      /* bright, cool academic off-white */
  --canvas-2:#EAF0F6;
  --cream:#FBF3DD;
  --white:#FFFFFF;

  /* --- geometry (crisp, slightly rounded — trustworthy, not corporate-soft) --- */
  --radius:8px;
  --radius-lg:14px;
  --maxw:1180px;
  --gutter:clamp(18px,4vw,40px);

  --shadow-sm:0 1px 2px rgba(10,27,51,.07),0 2px 6px rgba(10,27,51,.06);
  --shadow:0 2px 4px rgba(10,27,51,.06),0 18px 36px -20px rgba(10,27,51,.32);
  --shadow-amber:0 10px 30px -14px rgba(206,145,48,.5);

  /* --- signature "circuit" rule (echoes the logo's bridge-deck vias) --- */
  --circuit:radial-gradient(circle at center,var(--amber) 0 3px,transparent 3.3px) 0 0/24px 100% repeat-x;
  --circuit-sm:radial-gradient(circle at center,var(--amber) 0 2px,transparent 2.3px) 0 0/16px 100% repeat-x;

  /* --- type: serif headings (academic/editorial, echoes the logo wordmark) --- */
  --ff-head:Georgia,'Times New Roman','Noto Serif',serif;
  --ff-body:'Segoe UI',system-ui,-apple-system,BlinkMacSystemFont,Roboto,'Helvetica Neue',Arial,sans-serif;
  --ff-mono:'Consolas','SFMono-Regular','Cascadia Mono','Roboto Mono',ui-monospace,monospace;
}

/* ---------- reset / base ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  margin:0;
  font-family:var(--ff-body);
  color:var(--ink);
  background:var(--canvas);
  line-height:1.62;
  font-size:17px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--steel-700);text-decoration:none}
a:hover{color:var(--steel)}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}

/* ---------- headings ---------- */
h1,h2,h3,h4{
  font-family:var(--ff-head);
  font-weight:700;
  line-height:1.08;
  letter-spacing:-.005em;
  color:var(--navy-800);
  margin:0 0 .5em;
}
h1{font-size:clamp(2.4rem,5.6vw,4.1rem)}
h2{font-size:clamp(1.9rem,4vw,2.7rem)}
h3{font-size:clamp(1.24rem,2vw,1.5rem)}
h4{font-size:1.08rem;letter-spacing:.01em}
p{margin:0 0 1.1rem}
strong{font-weight:700}

/* ---------- layout helpers ---------- */
.sb-wrap{max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}
.sb-wrap--narrow{max-width:820px}
.sb-section{padding:clamp(56px,8vw,104px) 0}
.sb-section--tight{padding:clamp(40px,6vw,72px) 0}
.sb-center{text-align:center}
.sb-lead{font-size:clamp(1.08rem,1.7vw,1.3rem);color:var(--ink-70);line-height:1.6;max-width:60ch}
.sb-center .sb-lead{margin-inline:auto}

/* eyebrow / kicker — mono + three circuit dots, catalogue feel */
.sb-eyebrow{
  display:inline-flex;align-items:center;gap:.6em;
  font-family:var(--ff-mono);font-size:.8rem;font-weight:700;
  letter-spacing:.2em;text-transform:uppercase;color:var(--steel-700);
  margin:0 0 1.1rem;
}
.sb-eyebrow::before{content:"";width:34px;height:6px;background:var(--circuit-sm);flex:none}
.sb-eyebrow--light{color:var(--amber)}
.sb-center .sb-eyebrow{justify-content:center}

/* ---------- circuit rule device ---------- */
.sb-circuit{height:8px;background:var(--circuit)}
.sb-circuit--tall{height:11px}

/* ---------- buttons ---------- */
.sb-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.55em;
  font-family:var(--ff-body);font-weight:700;font-size:1.02rem;
  letter-spacing:.01em;line-height:1;
  padding:.92em 1.6em;border-radius:var(--radius);
  border:2px solid transparent;cursor:pointer;text-align:center;
  transition:transform .12s ease,background .16s,border-color .16s,color .16s;
}
.sb-btn:active{transform:translateY(1px)}
.sb-btn svg{width:1.05em;height:1.05em;flex:none}
.sb-btn--amber{background:var(--amber);color:#2B1B04;border-color:var(--amber);box-shadow:var(--shadow-amber)}
.sb-btn--amber:hover{background:var(--amber-600);border-color:var(--amber-600);color:#2B1B04}
.sb-btn--navy{background:var(--navy);color:#fff;border-color:var(--navy)}
.sb-btn--navy:hover{background:var(--steel-800);border-color:var(--steel-800);color:#fff}
.sb-btn--outline{background:transparent;color:var(--navy-800);border-color:var(--line)}
.sb-btn--outline:hover{border-color:var(--navy-800);color:var(--navy-800)}
.sb-btn--ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.sb-btn--ghost:hover{border-color:#fff;background:rgba(255,255,255,.1);color:#fff}
.sb-btn--block{width:100%}
.sb-btn-row{display:flex;flex-wrap:wrap;gap:14px}
.sb-center .sb-btn-row{justify-content:center}

/* ---------- header ---------- */
.sb-head{position:sticky;top:0;z-index:60;background:var(--navy-900);border-bottom:1px solid var(--navy-600)}
.sb-head__bar{display:flex;align-items:center;gap:20px;min-height:76px;padding-block:8px}
.sb-brand{display:inline-flex;align-items:center;gap:12px;color:#fff}
.sb-brand:hover{color:#fff}
.sb-brand__mark{width:46px;height:46px;flex:none}
.sb-brand__text{display:flex;flex-direction:column;line-height:1}
.sb-brand__name{font-family:var(--ff-head);font-weight:700;font-size:1.5rem;letter-spacing:0;color:#fff}
.sb-brand__name b{color:var(--amber);font-weight:700}
.sb-brand__sub{font-family:var(--ff-mono);font-size:.6rem;font-weight:700;letter-spacing:.22em;text-transform:uppercase;color:var(--slate);margin-top:4px}
.sb-menu{margin-left:auto;display:flex;align-items:center;gap:12px}
.sb-nav{display:flex;align-items:center;gap:2px}
.sb-nav a{
  font-family:var(--ff-body);font-weight:600;font-size:1rem;
  color:#CBD7E4;padding:.55em .7em;border-radius:var(--radius);white-space:nowrap;
}
.sb-nav a:hover{color:#fff;background:var(--navy-700)}
.sb-nav a[aria-current="page"]{color:var(--amber)}
.sb-nav a[aria-current="page"]:hover{background:transparent}
.sb-head__cta{display:flex;align-items:center;gap:10px}
.sb-tel{display:inline-flex;align-items:center;gap:.5em;color:#fff;font-weight:700;font-size:1.02rem;letter-spacing:.01em;white-space:nowrap;padding:.4em .3em}
.sb-tel:hover{color:var(--amber)}
.sb-tel svg{width:18px;height:18px;color:var(--amber)}
.sb-head__cta .sb-btn{padding:.7em 1.15em;font-size:.96rem}
.sb-burger{margin-left:auto;display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:10px}
.sb-burger span{width:26px;height:3px;background:#fff;border-radius:2px;transition:.2s}
.sb-burger[aria-expanded="true"] span:nth-child(1){transform:translateY(8px) rotate(45deg)}
.sb-burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.sb-burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}

@media (max-width:980px){
  .sb-menu{
    position:fixed;inset:77px 0 auto 0;flex-direction:column;align-items:stretch;
    background:var(--navy-900);margin:0;padding:14px var(--gutter) 20px;gap:14px;
    border-bottom:1px solid var(--navy-600);max-height:calc(100vh - 77px);overflow-y:auto;
    transform:translateY(-145%);transition:transform .28s ease;box-shadow:var(--shadow);
  }
  .sb-head[data-open="true"] .sb-menu{transform:translateY(0)}
  .sb-nav{flex-direction:column;align-items:stretch;gap:0}
  .sb-nav a{padding:.8em .4em;font-size:1.12rem;border-bottom:1px solid var(--navy-700)}
  .sb-head__cta{flex-direction:column;align-items:stretch;gap:12px;margin-top:4px}
  .sb-head__cta .sb-btn{width:100%;padding:.85em 1.15em}
  .sb-tel{justify-content:center;padding:.7em;background:var(--navy-700);border-radius:var(--radius)}
  .sb-burger{display:flex}
}

/* skip link */
.sb-skip{position:absolute;left:-999px;top:0;z-index:100;background:var(--amber);color:#2B1B04;font-weight:700;padding:.7em 1.2em;border-radius:0 0 var(--radius) 0}
.sb-skip:focus{left:0}

/* ---------- hero ---------- */
.sb-hero{position:relative;background:var(--navy-800);color:#fff;overflow:hidden}
.sb-hero__grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,5vw,64px);align-items:center;padding:clamp(52px,7vw,96px) 0}
.sb-hero h1{color:#fff}
.sb-hero h1 em{font-style:normal;color:var(--amber)}
.sb-hero__lead{color:#C7D4E6;font-size:clamp(1.08rem,1.6vw,1.3rem);max-width:52ch;margin-bottom:1.7rem}
.sb-hero__media{position:relative;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--navy-600);box-shadow:0 30px 60px -30px rgba(0,0,0,.65)}
.sb-hero__media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.sb-hero__badge{
  position:absolute;top:16px;left:16px;background:rgba(10,27,51,.85);backdrop-filter:blur(3px);
  border:1px solid var(--navy-500);border-radius:var(--radius);padding:.6em .9em;
  font-family:var(--ff-mono);font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:var(--amber);font-weight:700;
}
.sb-hero__facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:1.6rem}
.sb-chip{
  display:inline-flex;align-items:center;gap:.5em;background:var(--navy-700);border:1px solid var(--navy-500);
  border-radius:var(--radius);padding:.5em .85em;font-size:.87rem;color:#D9E2ED;font-weight:600;
}
.sb-chip svg{width:16px;height:16px;color:var(--amber);flex:none}
@media (max-width:860px){
  .sb-hero__grid{grid-template-columns:1fr;padding-top:40px}
  .sb-hero__media{order:-1}
  .sb-hero__media img{aspect-ratio:16/10}
}

/* ---------- trust strip ---------- */
.sb-trust{background:var(--navy);color:#fff;border-top:1px solid var(--navy-600)}
.sb-trust__row{display:flex;flex-wrap:wrap;gap:14px 30px;align-items:center;justify-content:center;padding:22px 0}
.sb-trust__item{display:inline-flex;align-items:center;gap:.6em;font-weight:700;font-size:.98rem;color:#E1E8F0}
.sb-trust__item svg{width:20px;height:20px;color:var(--amber);flex:none}
.sb-trust__item b{color:var(--amber)}

/* ---------- stat band ---------- */
.sb-stats{background:var(--canvas-2);border-block:1px solid var(--line)}
.sb-stats__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line)}
.sb-stat{background:var(--canvas-2);padding:34px 20px;text-align:center}
.sb-stat__num{font-family:var(--ff-head);font-weight:700;font-size:clamp(2.3rem,4vw,3rem);color:var(--steel-700);line-height:1}
.sb-stat__num span{color:var(--amber-700)}
.sb-stat__label{font-size:.9rem;color:var(--ink-70);margin-top:.5rem;font-weight:600}
@media (max-width:720px){.sb-stats__grid{grid-template-columns:repeat(2,1fr)}}

/* ---------- section head ---------- */
.sb-shead{max-width:64ch}
.sb-center .sb-shead{margin-inline:auto}
.sb-shead p{color:var(--ink-70)}

/* ---------- program category tiles ---------- */
.sb-cats{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:20px}
.sb-cat{
  position:relative;background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px 24px 24px;transition:transform .16s,border-color .16s,box-shadow .16s;overflow:hidden;
}
.sb-cat::before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px;background:var(--amber);transform:scaleY(0);transform-origin:top;transition:transform .2s}
.sb-cat:hover{transform:translateY(-4px);border-color:var(--steel);box-shadow:var(--shadow)}
.sb-cat:hover::before{transform:scaleY(1)}
.sb-cat__ico{width:56px;height:56px;display:grid;place-items:center;background:var(--navy);border-radius:var(--radius);margin-bottom:16px}
.sb-cat__ico svg{width:30px;height:30px;color:#fff}
.sb-cat h3{margin-bottom:.35em;font-size:1.2rem}
.sb-cat p{font-size:.96rem;color:var(--ink-70);margin-bottom:.8rem}
.sb-cat__list{display:flex;flex-wrap:wrap;gap:6px}
.sb-tag{font-family:var(--ff-mono);font-size:.72rem;font-weight:600;letter-spacing:.02em;color:var(--ink-55);background:var(--canvas);border:1px solid var(--line);border-radius:4px;padding:.28em .55em}

/* ---------- value / feature cards ---------- */
.sb-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
.sb-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px 26px}
.sb-card__ico{width:50px;height:50px;display:grid;place-items:center;background:var(--amber-050);border:1px solid var(--amber);border-radius:var(--radius);margin-bottom:14px}
.sb-card__ico svg{width:26px;height:26px;color:var(--amber-700)}
.sb-card h3{font-size:1.16rem;margin-bottom:.4em}
.sb-card p{font-size:.97rem;color:var(--ink-70);margin:0}

/* dark variant cards (on navy bands) */
.sb-card--dark{background:var(--navy-700);border-color:var(--navy-500);color:#D9E2ED}
.sb-card--dark h3{color:#fff}
.sb-card--dark p{color:#B9C6D6}
.sb-card--dark .sb-card__ico{background:rgba(232,169,60,.14);border-color:var(--amber-700)}

/* ---------- steps / how it works ---------- */
.sb-steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:20px;counter-reset:step}
.sb-step{position:relative;background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);padding:30px 24px 24px}
.sb-step::before{counter-increment:step;content:counter(step,decimal-leading-zero);position:absolute;top:-16px;left:22px;
  font-family:var(--ff-head);font-weight:700;font-size:1.12rem;color:#2B1B04;background:var(--amber);
  width:44px;height:44px;display:grid;place-items:center;border-radius:var(--radius);box-shadow:var(--shadow-sm)}
.sb-step h3{margin:.5em 0 .35em;font-size:1.1rem}
.sb-step p{font-size:.95rem;color:var(--ink-70);margin:0}

/* ---------- split feature (image + text) ---------- */
.sb-split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,60px);align-items:center}
.sb-split--rev .sb-split__media{order:2}
.sb-split__media{border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);position:relative}
.sb-split__media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.sb-split ul.sb-checks{margin:1rem 0 1.4rem}
@media (max-width:820px){.sb-split{grid-template-columns:1fr}.sb-split--rev .sb-split__media{order:0}}

/* check lists */
.sb-checks li{position:relative;padding-left:2rem;margin-bottom:.7rem;color:var(--ink-70)}
.sb-checks li::before{content:"";position:absolute;left:0;top:.28em;width:20px;height:20px;border-radius:5px;background:var(--steel-050);
  border:1px solid var(--steel);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%233E76B8' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E");
  background-size:15px;background-position:center;background-repeat:no-repeat}

/* ---------- plan / package cards (programs formats, enrollment) ---------- */
.sb-plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(290px,1fr));gap:22px}
.sb-plan{display:flex;flex-direction:column;background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden}
.sb-plan__top{background:var(--navy);color:#fff;padding:22px 24px;position:relative}
.sb-plan__top::after{content:"";position:absolute;left:0;right:0;bottom:0;height:6px;background:var(--circuit-sm)}
.sb-plan__role{font-family:var(--ff-mono);font-size:.7rem;letter-spacing:.15em;text-transform:uppercase;color:var(--amber);font-weight:700}
.sb-plan__top h3{color:#fff;margin:.4em 0 0;font-size:1.3rem}
.sb-plan__body{padding:22px 24px;display:flex;flex-direction:column;gap:.5rem;flex:1}
.sb-plan__body ul{display:flex;flex-direction:column;gap:.5rem;margin-bottom:1rem}
.sb-plan__body li{position:relative;padding-left:1.7rem;font-size:.95rem;color:var(--ink-70)}
.sb-plan__body li::before{content:"";position:absolute;left:0;top:.5em;width:9px;height:9px;background:var(--amber);border-radius:2px;transform:rotate(45deg)}
.sb-plan__foot{margin-top:auto;padding-top:.6rem}

/* ---------- serve / audience grid ---------- */
.sb-serve{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:18px}
.sb-serve__item{display:flex;gap:14px;align-items:flex-start;background:var(--white);border:1px solid var(--line);border-left:4px solid var(--steel);border-radius:var(--radius);padding:20px 20px}
.sb-serve__item svg{width:30px;height:30px;color:var(--steel);flex:none;margin-top:2px}
.sb-serve__item h3{font-size:1.06rem;margin-bottom:.25em}
.sb-serve__item p{font-size:.92rem;color:var(--ink-70);margin:0}

/* ---------- founder block ---------- */
.sb-founder{background:var(--navy-800);color:#fff;border-radius:var(--radius-lg);padding:clamp(28px,4vw,48px);position:relative;overflow:hidden}
.sb-founder::before{content:"";position:absolute;top:0;left:0;right:0;height:6px;background:var(--circuit-sm)}
.sb-founder__grid{display:grid;grid-template-columns:auto 1fr;gap:28px;align-items:center}
.sb-founder__badge{width:120px;height:120px;flex:none;display:grid;place-items:center;background:var(--navy-700);border:2px solid var(--amber);border-radius:50%}
.sb-founder__badge span{font-family:var(--ff-head);font-weight:700;font-size:2.4rem;color:var(--amber)}
.sb-founder h2{color:#fff}
.sb-founder p{color:#C7D4E6}
.sb-founder blockquote{margin:0 0 1rem;font-family:var(--ff-head);font-weight:700;font-size:clamp(1.25rem,2.4vw,1.7rem);line-height:1.25;color:#fff}
.sb-founder blockquote span{color:var(--amber)}
.sb-founder__creds{display:flex;flex-wrap:wrap;gap:8px;margin-top:1rem}
.sb-founder__creds .sb-chip{background:var(--navy-600)}
@media (max-width:640px){.sb-founder__grid{grid-template-columns:1fr}.sb-founder__badge{margin-bottom:6px}}

/* ---------- CTA band ---------- */
.sb-cta{position:relative;background:var(--steel);color:#fff;overflow:hidden}
.sb-cta::before{content:"";position:absolute;inset:0;background:linear-gradient(120deg,var(--steel-800),var(--steel) 60%);opacity:1}
.sb-cta__in{position:relative;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;padding:clamp(40px,6vw,64px) 0}
.sb-cta h2{color:#fff;margin:0}
.sb-cta p{color:#DCEAF5;margin:.6rem 0 0;max-width:52ch}
.sb-cta__top{position:absolute;top:0;left:0;right:0;height:8px;background:var(--circuit)}

/* ---------- callout / notice ---------- */
.sb-notice{background:var(--amber-050);border:1px solid var(--amber);border-left:5px solid var(--amber);border-radius:var(--radius);padding:20px 22px}
.sb-notice h3{color:var(--amber-700);font-size:1.08rem}
.sb-notice p{margin:0;color:var(--ink-70)}

/* ---------- contact ---------- */
.sb-contact{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,4vw,48px);align-items:start}
@media (max-width:820px){.sb-contact{grid-template-columns:1fr}}
.sb-infocard{background:var(--navy-800);color:#fff;border-radius:var(--radius-lg);padding:30px 28px;position:relative;overflow:hidden}
.sb-infocard::before{content:"";position:absolute;top:0;left:0;right:0;height:6px;background:var(--circuit-sm)}
.sb-infocard h2{color:#fff}
.sb-info__row{display:flex;gap:14px;align-items:flex-start;padding:16px 0;border-bottom:1px solid var(--navy-600)}
.sb-info__row:last-child{border-bottom:0}
.sb-info__row svg{width:22px;height:22px;color:var(--amber);flex:none;margin-top:3px}
.sb-info__row a{color:#fff}
.sb-info__row a:hover{color:var(--amber)}
.sb-info__k{font-family:var(--ff-mono);font-size:.68rem;letter-spacing:.13em;text-transform:uppercase;color:var(--slate);margin-bottom:2px}
.sb-info__v{font-size:1.03rem;font-weight:600;color:#fff}

/* form */
.sb-form{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px 26px}
.sb-field{margin-bottom:16px}
.sb-field label{display:block;font-weight:700;font-size:.9rem;color:var(--navy-800);margin-bottom:6px}
.sb-field .req{color:var(--amber-700)}
.sb-field input,.sb-field select,.sb-field textarea{
  width:100%;font-family:var(--ff-body);font-size:1rem;color:var(--ink);
  padding:.75em .85em;border:1px solid var(--line);border-radius:var(--radius);background:var(--canvas);transition:border-color .15s,box-shadow .15s;
}
.sb-field input:focus,.sb-field select:focus,.sb-field textarea:focus{outline:none;border-color:var(--steel);box-shadow:0 0 0 3px var(--steel-050);background:#fff}
.sb-field textarea{min-height:130px;resize:vertical}
.sb-form__row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media (max-width:560px){.sb-form__row{grid-template-columns:1fr}}
.sb-form__note{font-size:.85rem;color:var(--ink-55);margin:.4rem 0 0}
.sb-form__status{margin-top:14px;padding:12px 14px;border-radius:var(--radius);font-size:.95rem;display:none}
.sb-form__status.is-on{display:block}
.sb-form__status.ok{background:var(--steel-050);border:1px solid var(--steel);color:var(--steel-800)}

/* ---------- legal / prose ---------- */
.sb-prose{max-width:760px}
.sb-prose h2{font-size:clamp(1.45rem,3vw,1.9rem);margin-top:2.2rem}
.sb-prose h3{font-size:1.18rem;margin-top:1.6rem}
.sb-prose p,.sb-prose li{color:var(--ink-70)}
.sb-prose ul{list-style:disc;padding-left:1.3rem;margin:0 0 1.1rem}
.sb-prose ul li{margin-bottom:.5rem}
.sb-prose a{text-decoration:underline}
.sb-updated{font-family:var(--ff-mono);font-size:.82rem;color:var(--ink-55);margin-bottom:1.5rem}
.sb-toc{background:var(--white);border:1px solid var(--line);border-left:4px solid var(--amber);border-radius:var(--radius);padding:18px 22px;margin-bottom:2rem}
.sb-toc strong{font-family:var(--ff-body);letter-spacing:.02em;font-size:.9rem;color:var(--navy-800)}
.sb-toc ul{display:flex;flex-wrap:wrap;gap:.3rem 1.3rem;margin-top:.5rem}
.sb-toc a{font-size:.95rem}

/* ---------- page hero (interior) ---------- */
.sb-phero{background:var(--navy-800);color:#fff;position:relative;overflow:hidden}
.sb-phero__in{padding:clamp(46px,6vw,80px) 0 clamp(40px,5vw,64px)}
.sb-phero h1{color:#fff}
.sb-phero p{color:#C7D4E6;max-width:60ch;font-size:clamp(1.03rem,1.5vw,1.22rem)}
.sb-phero__crumbs{font-family:var(--ff-mono);font-size:.76rem;letter-spacing:.07em;color:var(--slate);margin-bottom:1rem;text-transform:uppercase}
.sb-phero__crumbs a{color:#9FB4CE}
.sb-phero__crumbs a:hover{color:var(--amber)}

/* ---------- footer ---------- */
.sb-foot{background:var(--navy-900);color:#B9C6D6}
.sb-foot__top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding:clamp(48px,6vw,72px) 0 40px}
.sb-foot__logo{width:210px;max-width:70%;margin-bottom:16px}
.sb-foot__blurb{font-size:.95rem;color:#8FA0B4;max-width:34ch}
.sb-foot h4{color:#fff;font-size:.95rem;letter-spacing:.04em;margin-bottom:1rem;font-family:var(--ff-body)}
.sb-foot__links li{margin-bottom:.6rem}
.sb-foot__links a{color:#B9C6D6;font-size:.96rem}
.sb-foot__links a:hover{color:var(--amber)}
.sb-foot__contact li{display:flex;gap:10px;align-items:flex-start;margin-bottom:.8rem;font-size:.95rem}
.sb-foot__contact svg{width:18px;height:18px;color:var(--amber);flex:none;margin-top:3px}
.sb-foot__contact a{color:#D9E2ED}
.sb-foot__contact a:hover{color:var(--amber)}
.sb-foot__bar{border-top:1px solid var(--navy-700)}
.sb-foot__bar-in{display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;align-items:center;padding:20px 0;font-size:.85rem;color:#7C8EA3}
.sb-foot__legal{font-family:var(--ff-mono);letter-spacing:.02em}
.sb-foot__bar a{color:#7C8EA3}.sb-foot__bar a:hover{color:var(--amber)}
@media (max-width:860px){.sb-foot__top{grid-template-columns:1fr 1fr;gap:28px}}
@media (max-width:520px){.sb-foot__top{grid-template-columns:1fr}}

/* ---------- 404 ---------- */
.sb-404{min-height:60vh;display:grid;place-items:center;text-align:center;padding:60px 0}
.sb-404 .code{font-family:var(--ff-head);font-weight:700;font-size:clamp(5rem,18vw,11rem);line-height:.9;color:var(--navy-800);letter-spacing:.01em}
.sb-404 .code span{color:var(--amber)}
.sb-404 img{width:96px;margin:0 auto 12px}

/* ---------- catalogue (programs page) ---------- */
[id]{scroll-margin-top:98px}
.sb-jump{display:flex;flex-wrap:wrap;gap:8px;margin-top:1.6rem}
.sb-jump a{font-weight:700;font-size:.9rem;
  color:var(--navy-800);background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:.5em .85em}
.sb-jump a:hover{border-color:var(--steel);color:var(--steel-700)}
.sb-catblock{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);padding:clamp(24px,3vw,38px);margin-bottom:22px}
.sb-catblock__head{display:flex;gap:18px;align-items:flex-start;margin-bottom:1.1rem}
.sb-catblock__ico{width:60px;height:60px;flex:none;display:grid;place-items:center;background:var(--navy);border-radius:var(--radius)}
.sb-catblock__ico svg{width:32px;height:32px;color:#fff}
.sb-catblock__head h2{margin:0;font-size:clamp(1.4rem,3vw,1.9rem)}
.sb-catblock__head .sb-tag{margin-top:.5rem}
.sb-catblock__code{font-family:var(--ff-mono);font-size:.7rem;letter-spacing:.13em;text-transform:uppercase;color:var(--steel-700);font-weight:700}
.sb-itemgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:12px 26px;margin-top:.4rem}
.sb-itemgrid li{position:relative;padding-left:1.5rem;color:var(--ink-70);font-size:.97rem;margin-bottom:.15rem}
.sb-itemgrid li::before{content:"";position:absolute;left:0;top:.5em;width:8px;height:8px;background:var(--amber);transform:rotate(45deg)}

/* ---------- utilities ---------- */
.sb-mt0{margin-top:0}.sb-mb0{margin-bottom:0}
.sb-band-dark{background:var(--navy-800);color:#fff}
.sb-band-dark h2{color:#fff}
.sb-band-dark .sb-lead,.sb-band-dark p{color:#C7D4E6}
.sb-band-tint{background:var(--canvas-2)}
.sb-grid-2{display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,4vw,48px);align-items:center}
@media (max-width:820px){.sb-grid-2{grid-template-columns:1fr}}
.sb-divider{height:1px;background:var(--line);border:0;margin:0}

/* reveal on scroll — only hidden when JS is present (no-JS shows everything) */
.js .reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.js .reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.js .reveal{opacity:1;transform:none;transition:none}}

/* focus visibility */
:focus-visible{outline:3px solid var(--amber);outline-offset:2px;border-radius:3px}
a:focus-visible,.sb-btn:focus-visible{outline-offset:3px}