:root{
  --paper:#F5F7F6;
  --surface:#FFFFFF;
  --surface-2:#EEF3F2;
  --ink:#14201E;
  --ink-soft:#4B5B58;
  --line:#DCE5E3;
  --teal:#0B5F59;
  --amber:#C17F1A;
  --amber-bg:#FBEBCF;
  --amber-ink:#5B3B08;
  --danger:#B3261E;
  --danger-bg:#FBE9E7;
  --focus:#0B5F59;
  --on-amber:#2B1B02;
  --font-sans:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --paper:#0E1A18;
    --surface:#16231F;
    --surface-2:#1D2C27;
    --ink:#E7F1EE;
    --ink-soft:#9FB4AF;
    --line:#2A3B37;
    --teal:#4FC3B8;
    --amber:#E8A93D;
    --amber-bg:#3A2C10;
    --amber-ink:#F3D9A6;
    --danger:#E5847B;
    --danger-bg:#3A1613;
    --focus:#4FC3B8;
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --paper:#0E1A18;
  --surface:#16231F;
  --surface-2:#1D2C27;
  --ink:#E7F1EE;
  --ink-soft:#9FB4AF;
  --line:#2A3B37;
  --teal:#4FC3B8;
  --amber:#E8A93D;
  --amber-bg:#3A2C10;
  --amber-ink:#F3D9A6;
  --danger:#E5847B;
  --danger-bg:#3A1613;
  --focus:#4FC3B8;
  color-scheme:dark;
}

*{box-sizing:border-box;}
*:focus-visible{outline:2px solid var(--focus);outline-offset:2px;}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important;}}

html,body{height:100%;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  padding-inline:16px;
  padding-block:28px;
  display:flex;
  justify-content:center;
}
img{max-width:100%;}
[hidden]{display:none!important;}

.page{width:100%;max-width:640px;margin-inline:auto;display:flex;flex-direction:column;gap:20px;}

.topbar{display:flex;align-items:center;gap:12px;}
.mark{
  width:40px;height:40px;border-radius:10px;background:var(--teal);color:var(--paper);
  display:grid;place-items:center;font-family:var(--font-mono);font-weight:600;font-size:1.05rem;
  flex-shrink:0;
}
.topbar-text{display:flex;flex-direction:column;gap:2px;min-width:0;}
.eyebrow{margin:0;text-transform:uppercase;letter-spacing:.06em;font-weight:600;font-size:.75rem;color:var(--teal);}
.topbar-sub{margin:0;font-size:.85rem;color:var(--ink-soft);overflow-wrap:break-word;}

.icon-btn{
  appearance:none;border:1px solid var(--line);background:var(--surface);border-radius:10px;
  width:40px;height:40px;display:grid;place-items:center;color:var(--ink-soft);cursor:pointer;
  margin-left:auto;flex-shrink:0;
}
.icon-btn:hover{color:var(--teal);border-color:var(--teal);}
.icon-btn svg{width:18px;height:18px;}

.card{
  background:var(--surface);border:1px solid var(--line);border-radius:16px;
  padding:28px;display:flex;flex-direction:column;gap:22px;
  box-shadow:0 1px 2px rgba(0,0,0,.04);
}
@media (max-width:480px){.card{padding:20px;}}

.screen{display:flex;flex-direction:column;gap:22px;}

h1{font-size:1.45rem;font-weight:700;margin:0;text-wrap:balance;letter-spacing:-.01em;}
h2{font-size:1.02rem;font-weight:600;margin:0;}
h3{font-size:.95rem;font-weight:600;margin:0;}
.lead{margin:0;color:var(--ink-soft);font-size:.95rem;line-height:1.5;}
.eyebrow.center,.lead.center,.disclaimer.center{text-align:center;}

label{display:block;font-size:.85rem;font-weight:600;margin-bottom:6px;}
input[type="text"]{
  width:100%;font-family:var(--font-mono);font-size:1.1rem;letter-spacing:.02em;
  padding:14px 16px;border-radius:10px;border:1px solid var(--line);
  background:var(--paper);color:var(--ink);
}
input[type="text"]::placeholder{color:var(--ink-soft);opacity:.7;}

.field-error{
  color:var(--danger);background:var(--danger-bg);border-radius:8px;
  padding:10px 12px;font-size:.85rem;margin:10px 0 0;
}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 18px;border-radius:10px;font-weight:600;font-size:.95rem;
  border:1px solid transparent;cursor:pointer;text-decoration:none;width:100%;
  font-family:inherit;
}
.btn-primary{background:var(--teal);color:var(--paper);margin-top:6px;}
.btn-primary:hover{filter:brightness(1.08);}
.btn-accent{background:var(--amber);color:var(--on-amber);}
.btn-accent:hover{filter:brightness(1.05);}
.btn-accent.is-disabled{opacity:.55;cursor:not-allowed;}

.foot-note{margin:0;font-size:.82rem;color:var(--ink-soft);}

.link-btn{
  background:none;border:none;padding:0;color:var(--teal);font-weight:600;
  font-size:.9rem;cursor:pointer;text-align:left;font-family:inherit;align-self:flex-start;
}
.link-btn.small{font-size:.82rem;color:var(--ink-soft);font-weight:500;}
.link-btn:hover{text-decoration:underline;}

.inst-head{display:flex;flex-direction:column;gap:4px;}
.inst-code{
  margin:0;font-family:var(--font-mono);font-size:.8rem;color:var(--ink-soft);
  letter-spacing:.02em;font-variant-numeric:tabular-nums;
}

.block{display:flex;flex-direction:column;gap:10px;padding-top:20px;border-top:1px solid var(--line);}
.block-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;flex-wrap:wrap;}
.progress{margin:0;font-family:var(--font-mono);font-size:.82rem;color:var(--ink-soft);font-variant-numeric:tabular-nums;}
.hint{margin:0;font-size:.85rem;color:var(--ink-soft);line-height:1.5;}

.checklist{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;}
.checklist-item{
  display:flex;align-items:flex-start;gap:10px;padding:12px 14px;
  border:1px solid var(--line);border-radius:10px;background:var(--surface-2);
}
.checklist-item input[type="checkbox"]{
  width:20px;height:20px;accent-color:var(--teal);margin-top:2px;flex-shrink:0;
}
.checklist-item label{font-size:.94rem;line-height:1.4;}

.steps{margin:0;padding-left:20px;display:flex;flex-direction:column;gap:8px;font-size:.92rem;line-height:1.5;}
.steps code{
  font-family:var(--font-mono);background:var(--surface-2);padding:2px 6px;
  border-radius:6px;font-size:.85em;
}

.deadline-block{background:var(--amber-bg);border:1px solid var(--amber);border-radius:12px;padding:16px 18px;border-top:none;}
.deadline-block h2{color:var(--amber-ink);}
.deadline-block p{margin:0;font-size:.92rem;}

.repo-pending{margin:0;font-size:.82rem;color:var(--amber);}

.support-block p{margin:0;font-size:.92rem;line-height:1.5;}

.disclaimer{
  margin:0;font-size:.8rem;color:var(--ink-soft);line-height:1.5;
  border-top:1px solid var(--line);padding-top:16px;
}
.disclaimer.center{border-top:none;padding-top:0;}

/* ---- landing ---- */
.hero{
  display:flex;flex-direction:column;align-items:center;gap:14px;
  max-width:420px;margin-inline:auto;text-align:center;
}
.hero-icon{
  width:56px;height:56px;border-radius:14px;background:var(--surface-2);
  color:var(--teal);display:grid;place-items:center;
}
.hero-icon svg{width:28px;height:28px;}
.hero-title{font-size:1.6rem;}
.hero-cta{margin-top:6px;}

.body-text{margin:0;color:var(--ink-soft);font-size:.95rem;line-height:1.6;}

.feature-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));
  gap:14px;margin-top:6px;
}
.feature-card{
  display:flex;flex-direction:column;gap:8px;padding:16px;
  border:1px solid var(--line);border-radius:12px;background:var(--surface-2);
}
.feature-icon{
  width:34px;height:34px;border-radius:9px;background:var(--surface);
  border:1px solid var(--line);color:var(--teal);display:grid;place-items:center;
}
.feature-icon svg{width:18px;height:18px;}
.feature-card p{margin:0;font-size:.85rem;color:var(--ink-soft);line-height:1.5;}

.institution-grid{
  list-style:none;margin:0;padding:0;
  display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));
  gap:6px 16px;
}
.institution-grid li{
  display:flex;align-items:center;gap:8px;font-size:.9rem;
  padding:6px 4px;line-height:1.4;
}
.institution-grid li::before{
  content:"";width:6px;height:6px;border-radius:50%;
  background:var(--teal);flex-shrink:0;
}

.landing-cta{
  display:flex;flex-direction:column;align-items:center;gap:12px;text-align:center;
  padding-top:20px;border-top:1px solid var(--line);
}
.landing-cta p{margin:0;font-size:.92rem;color:var(--ink-soft);}
.landing-cta .btn{max-width:340px;}

.deliverable-note{
  display:flex;flex-direction:column;gap:6px;padding:14px 16px;margin-top:4px;
  background:var(--surface-2);border:1px solid var(--line);border-radius:12px;
}
.deliverable-note h3{color:var(--teal);}
.deliverable-note p{margin:0;font-size:.9rem;color:var(--ink-soft);line-height:1.55;}