/* GRADE presentation site. Tokens follow GRADE_Nacelle_3D_Kit/grade-brand.css (brand book 2.0). */
@font-face{font-family:"Nacelle";src:url("../fonts/Nacelle-Regular.woff2") format("woff2");font-style:normal;font-weight:400;font-display:swap}
@font-face{font-family:"Nacelle";src:url("../fonts/Nacelle-SemiBold.woff2") format("woff2");font-style:normal;font-weight:600;font-display:swap}
@font-face{font-family:"Nacelle";src:url("../fonts/Nacelle-Bold.woff2") format("woff2");font-style:normal;font-weight:700;font-display:swap}
@font-face{font-family:"Nacelle";src:url("../fonts/Nacelle-Heavy.woff2") format("woff2");font-style:normal;font-weight:800;font-display:swap}

:root{
  --grade-ink:#163B39;--grade-teal:#087F8C;--grade-mint:#E2F4EA;
  --grade-lime:#D8EF7C;--grade-coral:#FF7A59;--grade-lavender:#EEE7FA;
  --grade-paper:#FBFCF8;--grade-peach:#FFF0E9;--grade-muted:#526C66;
  --grade-line:#DCE7DF;--grade-white:#fff;
  --grade-surface:var(--grade-paper);
  --grade-font:"Nacelle",sans-serif;
  --grade-radius-card:20px;--grade-radius-button:12px;
  --grade-content-max:1200px;--grade-padding:24px;--grade-grid-gap:24px;
  --grade-section-gap:96px;
  --grade-h1-size:56px;--grade-h1-line:62px;--grade-h2-size:36px;--grade-h2-line:44px;
  --grade-body-size:18px;--grade-body-line:28px;
  --grade-motion-button:160ms;--grade-motion-ui:180ms;
  --grade-motion-reveal:480ms;--grade-motion-distance:12px;--grade-motion-stagger:80ms;
  --grade-motion-enter:cubic-bezier(.22,1,.36,1);
}
[data-grade-audience="student"]{--grade-surface:var(--grade-lime)}
[data-grade-audience="parents"]{--grade-surface:var(--grade-mint)}
[data-grade-audience="school"]{--grade-surface:var(--grade-mint)}
[data-grade-audience="college"]{--grade-surface:var(--grade-lavender)}
[data-grade-audience="sponsors"]{--grade-surface:var(--grade-peach)}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:auto}
body{
  margin:0;background:var(--grade-paper);color:var(--grade-ink);
  font-family:var(--grade-font);font-size:var(--grade-body-size);line-height:var(--grade-body-line);font-weight:400;
}
img{max-width:100%;height:auto}
.en{display:inline;margin:0;padding:0;font-family:var(--grade-font)}
.h1-line{display:block}
h1,h2,h3,p{margin-top:0}
h1{font-size:var(--grade-h1-size);line-height:var(--grade-h1-line);font-weight:800;letter-spacing:-.025em}
h2{font-size:var(--grade-h2-size);line-height:var(--grade-h2-line);font-weight:700;letter-spacing:-.015em}
h3{font-size:22px;line-height:28px;font-weight:700;letter-spacing:-.01em}
a{color:var(--grade-teal)}
p,li{overflow-wrap:anywhere}
.skip{
  position:absolute;left:16px;top:-48px;z-index:5;
  background:var(--grade-ink);color:var(--grade-white);padding:12px 16px;border-radius:12px;text-decoration:none;
}
.skip:focus{top:16px}
:focus{outline:none}
:focus-visible{outline:3px solid var(--grade-ink);outline-offset:3px}
.wrap{width:100%;max-width:calc(var(--grade-content-max) + 2 * var(--grade-padding));margin-inline:auto;padding-inline:var(--grade-padding)}
.section{padding-block:var(--grade-section-gap)}
.lead{font-size:20px;line-height:30px;max-width:40rem}
.note{
  margin:24px 0 0;padding:16px 18px;border-radius:var(--grade-radius-card);
  background:var(--grade-white);border:1px solid var(--grade-line);
}
.kicker{
  display:inline-flex;align-items:center;min-height:32px;margin:0 0 16px;padding:4px 12px;
  border:1px solid var(--grade-line);border-radius:999px;background:var(--grade-white);
  font-size:14px;line-height:20px;font-weight:700;
}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.grade-button{
  box-sizing:border-box;display:inline-flex;align-items:center;justify-content:center;gap:0;
  min-height:48px;min-width:44px;padding:12px 24px;border:1px solid var(--grade-teal);border-radius:var(--grade-radius-button);
  background:var(--grade-teal);color:var(--grade-white);font:700 16px/22px var(--grade-font);text-decoration:none;cursor:pointer;
  transition:transform var(--grade-motion-button) var(--grade-motion-enter),background-color var(--grade-motion-button) ease;
}
.grade-button--secondary{color:var(--grade-teal);background:var(--grade-white)}
.grade-button:active{transform:scale(.98)}
.site-header{position:relative;z-index:200;overflow:visible;border-bottom:1px solid var(--grade-line);background:var(--grade-paper)}
.header-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 24px;min-height:80px;padding-block:12px}
.wordmark{display:block;width:132px;height:auto}
.nav-desktop{margin-left:auto}
.language-switch{display:flex;align-items:center;gap:2px;border:1px solid var(--grade-line);border-radius:12px;padding:2px;flex-shrink:0}
.language-switch a{display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:40px;padding:6px 10px;border-radius:9px;text-decoration:none;font-size:14px;font-weight:700;color:var(--grade-muted)}
.language-switch a[aria-current="page"]{background:var(--grade-ink);color:var(--grade-white)}
.language-switch a:hover:not([aria-current]){background:var(--grade-mint)}
@media(max-width:767px){.header-inner{gap:8px}.language-switch{margin-left:auto}.wordmark{width:112px}}
.header-tools{display:flex;align-items:center;gap:4px;margin-left:auto}
.header-app{
  display:inline-flex;align-items:center;justify-content:center;min-height:44px;min-width:44px;
  padding:8px 12px;border-radius:12px;color:var(--grade-ink);font-weight:700;font-size:16px;line-height:22px;text-decoration:none;
}
@media(min-width:768px){.header-tools{margin-left:0}}
.nav-phone{display:none}
.nav{align-items:center}
.nav-who{position:relative}
.nav-who summary{
  display:inline-flex;align-items:center;min-height:44px;min-width:44px;padding:8px 12px;border-radius:12px;
  font-weight:700;cursor:pointer;list-style:none;
}
.nav-who summary::-webkit-details-marker{display:none}
.nav-who summary::marker{content:""}
.nav-who__panel{display:none}
.nav-who[open]>.nav-who__panel{
  display:flex;flex-direction:column;position:absolute;top:calc(100% + 8px);left:0;z-index:400;
  min-width:220px;padding:8px;background:var(--grade-paper);border:1px solid var(--grade-line);border-radius:16px;
  box-shadow:0 18px 40px color-mix(in srgb,var(--grade-ink) 16%,transparent);
}
.nav-who__panel a{min-height:44px}
.nav{display:flex;flex-wrap:wrap;gap:4px}
.nav a{
  display:inline-flex;align-items:center;min-height:44px;padding:8px 12px;border-radius:12px;
  color:var(--grade-ink);font-weight:700;font-size:16px;line-height:22px;text-decoration:none;
  transition:background-color var(--grade-motion-ui) ease;
}
.nav a[aria-current="page"]{background:var(--grade-mint)}
.hero-grid{display:grid;gap:32px;align-items:start}
.hero-band{background:var(--grade-surface);border-radius:var(--grade-radius-card);padding:28px 20px}
.photo-frame{margin:0}
.photo-frame img{display:block;width:100%;height:auto;border-radius:var(--grade-radius-card)}
.photo-frame figcaption{margin-top:12px;font-size:14px;line-height:20px}
.cards{display:grid;gap:var(--grade-grid-gap)}
.card{
  padding:24px;border:1px solid var(--grade-line);border-radius:var(--grade-radius-card);
  background:var(--grade-white);color:var(--grade-ink);
}
.card p:last-child{margin-bottom:0}
.icon{width:24px;height:24px;flex-shrink:0}
.card-title{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.audience-card{
  display:flex;flex-direction:column;gap:8px;min-height:100%;padding:24px;border:1px solid var(--grade-line);
  border-radius:var(--grade-radius-card);background:var(--grade-white);color:var(--grade-ink);text-decoration:none;
  transition:background-color var(--grade-motion-ui) ease;
}
.audience-card h3{margin-bottom:0}
.audience-card p{margin-bottom:0;flex:1}
.more{font-weight:700;color:var(--grade-teal)}
.pilot-grid{background:var(--grade-mint);border-radius:var(--grade-radius-card);padding:28px 20px}
.scene-section{position:relative;overflow:hidden;display:flex;align-items:center;min-height:680px;background:var(--grade-surface)}
.scene-section::after{
  content:"";position:absolute;inset:0;pointer-events:none;z-index:1;
  background:linear-gradient(90deg,var(--grade-surface) 0 40%,color-mix(in srgb,var(--grade-surface) 90%,transparent) 50%,transparent 66%);
}
.scene-copy{
  position:relative;z-index:2;width:min(34rem,38%);
  margin-left:max(var(--grade-padding),calc((100% - var(--grade-content-max)) / 2));
  margin-right:auto;padding-block:80px;
}
.scene-hero__art{
  position:absolute;top:0;right:0;z-index:0;width:68%;height:100%;max-width:none;
  object-fit:cover;object-position:center right;border-radius:0;
}
.scene-hero__art.is-photo,
.scene-hero__art.is-portrait{object-fit:cover;object-position:center 34%}
.scene-hero__art.is-model{background:transparent}
a.card-link{display:block;height:100%;box-sizing:border-box;color:inherit;text-decoration:none}
a.card-link:hover,a.card-link:focus-visible{
  border-color:var(--grade-teal);background:var(--grade-mint);
  box-shadow:0 16px 32px color-mix(in srgb,var(--grade-ink) 12%,transparent);
}
a.card-link:focus-visible{outline:3px solid var(--grade-teal);outline-offset:3px}
.model-slot{width:100%;height:min(68vh,560px);min-height:420px;margin-top:32px}
model-viewer{display:block;width:100%;height:100%;background:transparent}
.phases{display:grid;gap:var(--grade-grid-gap)}
.step-no{font-family:var(--grade-font);font-weight:800;font-size:14px;letter-spacing:.04em}
.ambassador-text{
  max-width:42rem;padding:8px 0 0;overflow-wrap:break-word;
}
.ambassador-text p{margin:0 0 16px}
.ambassador-text p:last-child{margin-bottom:0}
.js .ambassador-more{display:none}
.js #ambassador.is-open .ambassador-more{display:block}
.ambassador-toggle{display:none;margin-top:8px}
.js .ambassador-toggle{display:inline-flex}
.faq{display:grid;gap:12px}
.faq details{border:1px solid var(--grade-line);border-radius:var(--grade-radius-card);background:var(--grade-white);padding:4px 18px}
.faq summary{display:flex;align-items:center;justify-content:flex-start;gap:16px;min-height:48px;padding:12px 0;font-weight:700;cursor:pointer;text-align:left}
.faq-q{flex:1;text-align:left}
.faq summary img{margin-left:auto}
.faq summary::-webkit-details-marker{display:none}
.faq summary img{transition:transform var(--grade-motion-ui) var(--grade-motion-enter)}
.faq details[open] summary img{transform:rotate(180deg)}
.faq details p{margin-bottom:16px}
.form-card{padding:24px;border:1px solid var(--grade-line);border-radius:var(--grade-radius-card);background:var(--grade-white)}
.fields{display:grid;gap:16px}
.field{display:flex;flex-direction:column;gap:8px;min-width:0}
.field label{font-weight:700}
.optional{font-weight:400}
input,select,textarea{
  width:100%;min-height:48px;padding:12px 14px;border:1px solid var(--grade-line);border-radius:var(--grade-radius-button);
  background:var(--grade-white);color:var(--grade-ink);font:400 16px/24px var(--grade-font);
}
textarea{min-height:140px;resize:vertical}
input[aria-invalid="true"],select[aria-invalid="true"],textarea[aria-invalid="true"]{border-color:var(--grade-coral)}
.field-error{margin:0;padding:8px 12px;border-radius:12px;background:var(--grade-peach)}
.form-result{margin-top:20px;padding:16px 18px;border:1px solid var(--grade-ink);border-radius:var(--grade-radius-card);background:var(--grade-white)}
.form-result h3{margin-bottom:8px}
.form-result p{margin-bottom:0}
.stubs{display:grid;gap:var(--grade-grid-gap)}
.stub{padding:20px;border:1px dashed var(--grade-line);border-radius:var(--grade-radius-card);background:var(--grade-white)}
.stub h3{font-family:var(--grade-font);font-weight:700}
.tag{display:inline-flex;align-items:center;min-height:32px;margin:0 0 8px;padding:2px 10px;border-radius:999px;background:var(--grade-peach);font-size:14px;line-height:20px;font-weight:700}
.split{display:grid;gap:var(--grade-grid-gap)}
.site-footer{border-top:1px solid var(--grade-line);padding-block:32px}
.site-footer nav{margin-bottom:12px}
.site-footer p{margin-bottom:0;font-size:14px;line-height:20px}
.example{background:var(--grade-lavender)}

/* New copy uses the existing cards, colours and typography. */
.kicker{display:inline-block}
.table-scroll{overflow-x:auto;margin-top:32px}
.rules-table{width:100%;border-collapse:separate;border-spacing:0;border:1px solid var(--grade-line);border-radius:20px;background:var(--grade-white);overflow:hidden}
.rules-table caption{text-align:left;font-size:22px;line-height:28px;font-weight:700;margin-bottom:16px}
.rules-table th,.rules-table td{text-align:left;padding:18px 24px;vertical-align:top;border-bottom:1px solid var(--grade-line);overflow-wrap:anywhere}
.rules-table thead{background:var(--grade-mint)}
.rules-table tbody tr:last-child>*{border-bottom:0}
.rules-table th{font-weight:700}
.examples-grid .card:only-child{grid-column:1 / -1;max-width:900px}
.form-honeypot{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}
.form-result[hidden]{display:none}
.form-result[data-state="error"]{background:var(--grade-peach)}
.form-result[data-state="success"]{background:var(--grade-mint)}
.grade-button:disabled{opacity:.65;cursor:wait;animation:none}
.scene-copy h1{overflow-wrap:break-word}
@media(min-width:1024px){
  .scene-section{padding-block:56px}
  .scene-copy{width:min(40rem,48%);padding-block:32px}
  .scene-section::after{background:linear-gradient(90deg,var(--grade-surface) 0 43%,color-mix(in srgb,var(--grade-surface) 94%,transparent) 53%,transparent 74%)}
}
@media(min-width:768px) and (max-width:1023px){
  .scene-section{flex-direction:column;align-items:stretch;min-height:0;padding-block:56px}
  .scene-section::after{display:none}
  .scene-copy{width:auto;max-width:760px;margin-inline:auto;padding-block:0}
  .scene-copy h1{font-size:44px;line-height:50px}
  .scene-hero__art{position:relative;order:2;width:100%;height:560px;margin-top:32px;object-fit:cover;object-position:center 34%}
}
@media(min-width:1100px){.cards.examples-grid--three{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:767px){
  .rules-table th,.rules-table td{padding:12px}
  .scene-copy .grade-button{max-width:100%;text-align:center}
}

@media(min-width:768px){
  .hero-band{padding:48px}
  .hero-grid{grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:48px;align-items:start}
  .cards,.phases,.stubs,.audience-grid,.split{grid-template-columns:1fr 1fr}
  .audience-grid{grid-template-columns:repeat(6,minmax(0,1fr))}
  .audience-card{grid-column:span 2}
  .audience-card:nth-child(4){grid-column:2 / span 2}
  .audience-card:nth-child(5){grid-column:4 / span 2}
  .pilot-grid{padding:40px}
  .fields{grid-template-columns:1fr 1fr}
  .span-2{grid-column:1 / -1}
  .form-card{padding:32px}
}
@media(max-width:767px){
  :root{
    --grade-padding:20px;--grade-grid-gap:16px;--grade-section-gap:56px;
    --grade-h1-size:36px;--grade-h1-line:42px;--grade-h2-size:28px;--grade-h2-line:36px;
    --grade-body-size:16px;--grade-body-line:24px;
    --grade-motion-reveal:360ms;--grade-motion-distance:6px;
  }
  .lead{font-size:18px;line-height:26px}
  .hero-grid .photo-frame{order:2;margin-top:32px}
  .scene-section{display:flex;flex-direction:column;align-items:stretch;min-height:0}
  .scene-section::after{display:none}
  .scene-copy{width:auto;max-width:none;margin-left:0;margin-right:0;padding-block:0}
  .scene-hero__art{
    position:relative;order:2;width:100%;height:52vh;min-height:320px;margin-top:28px;
    object-fit:cover;object-position:center 34%;
  }
  .model-slot{height:48vh;min-height:300px}
  .nav-desktop{display:none}
  .nav-phone{display:block;margin-left:0}
  .nav-phone summary{
    display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:44px;
    padding:8px 16px;border:1px solid var(--grade-line);border-radius:12px;background:var(--grade-white);
    color:var(--grade-ink);font:700 16px/22px var(--grade-font);cursor:pointer;list-style:none;
  }
  .nav-phone summary::-webkit-details-marker{display:none}
  .nav-phone summary::marker{content:""}
  .nav-phone nav{display:none}
  .nav-phone[open] nav{
    position:absolute;left:0;right:0;top:100%;z-index:300;display:flex;flex-direction:column;align-items:stretch;
    padding:8px 20px 16px;background:var(--grade-paper);border-bottom:1px solid var(--grade-line);
    box-shadow:0 18px 40px color-mix(in srgb,var(--grade-ink) 16%,transparent);
  }
  .nav-phone[open] nav a,.nav-phone summary{min-height:44px;font-size:16px;justify-content:flex-start}
  .nav-phone .nav-who[open]>.nav-who__panel{
    position:static;z-index:400;width:auto;min-width:0;margin:0 0 4px;padding:4px 0 4px 12px;
    background:var(--grade-mint);border:0;box-shadow:none;
  }
}
.nav a,.header-app,.site-footer a,.grade-button,.card,.audience-card,.stub,.faq summary,.field input,.field select,.field textarea,.nav-phone summary{
  transition:transform var(--grade-motion-button) var(--grade-motion-enter),background-color var(--grade-motion-ui) ease,border-color var(--grade-motion-ui) ease,box-shadow var(--grade-motion-ui) ease,background-size var(--grade-motion-ui) var(--grade-motion-enter),color var(--grade-motion-button) ease;
}
.nav a,.header-app,.site-footer a{
  background-image:linear-gradient(currentColor,currentColor);
  background-repeat:no-repeat;background-position:left 100%;background-size:0 2px;
}
.field input:focus-visible,.field select:focus-visible,.field textarea:focus-visible{border-color:var(--grade-teal);box-shadow:0 0 0 4px color-mix(in srgb,var(--grade-teal) 22%,transparent)}

@media(prefers-reduced-motion:no-preference){
  .site-header{animation:header-in 480ms var(--grade-motion-enter) both}
  .scene-hero__art:not(.is-model){animation:scene-drift 22s ease-in-out infinite}
  .icon{animation:icon-float 3.2s ease-in-out infinite}
  .cards .card:nth-child(2) .icon,.stubs .stub:nth-child(2) .icon,.audience-grid .audience-card:nth-child(2) .icon{animation-delay:.35s}
  .cards .card:nth-child(3) .icon,.stubs .stub:nth-child(3) .icon,.audience-grid .audience-card:nth-child(3) .icon{animation-delay:.7s}
  .cards .card:nth-child(4) .icon,.audience-grid .audience-card:nth-child(4) .icon{animation-delay:1.05s}
  .grade-button:not(.grade-button--secondary){animation:button-glow 3.8s ease-in-out infinite}
  @supports (animation-timeline:view()){
    .card,.audience-card,.stub,.faq details,.field,.photo-frame,.ambassador-text,.form-card,.model-slot,.site-footer{
      animation:grade-rise .8s var(--grade-motion-enter) both;
      animation-timeline:view();
      animation-range:entry 0% cover 28%;
    }
    .cards .card:nth-child(2),.audience-grid .audience-card:nth-child(2),.stubs .stub:nth-child(2),.phases .card:nth-child(2),.fields .field:nth-child(2){animation-range:entry 6% cover 34%}
    .cards .card:nth-child(3),.audience-grid .audience-card:nth-child(3),.stubs .stub:nth-child(3),.fields .field:nth-child(3){animation-range:entry 12% cover 40%}
    .cards .card:nth-child(4),.audience-grid .audience-card:nth-child(4),.stubs .stub:nth-child(4),.fields .field:nth-child(4){animation-range:entry 18% cover 46%}
  }
}
@keyframes header-in{from{transform:translateY(-8px)}to{transform:none}}
@keyframes grade-rise{from{transform:translateY(var(--grade-motion-distance))}to{transform:none}}
@keyframes scene-drift{
  0%,100%{transform:scale(1.08) translate3d(0,0,0)}
  50%{transform:scale(1.14) translate3d(-2%,-1.2%,0)}
}
@keyframes icon-float{
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(-4px)}
}
@keyframes button-glow{
  0%,100%{box-shadow:0 0 0 0 transparent}
  50%{box-shadow:0 10px 24px color-mix(in srgb,var(--grade-teal) 28%,transparent)}
}
@media(hover:hover) and (prefers-reduced-motion:no-preference){
  .nav a:hover,.header-app:hover,.site-footer a:hover{background-size:100% 2px}
  .grade-button:hover{transform:translateY(-2px)}
  .card:hover,.stub:hover,.audience-card:hover,.photo-frame:hover{box-shadow:0 14px 28px color-mix(in srgb,var(--grade-ink) 8%,transparent)}
  .audience-card:hover{background:var(--grade-mint)}
  .stub:hover{border-color:var(--grade-coral)}
  .faq summary:hover{color:var(--grade-teal)}
}
@media(prefers-reduced-motion:reduce){
  :root{--grade-motion-button:0ms;--grade-motion-ui:0ms;--grade-motion-reveal:0ms;--grade-motion-distance:0px;--grade-motion-stagger:0ms}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .grade-button:hover,.grade-button:active,.card:hover,.stub:hover,.audience-card:hover,.photo-frame:hover,.icon{transform:none!important}
  .faq details[open] summary img{transform:rotate(180deg)}
}