:root{
  --teal:#0E6E64; --teal-deep:#0A4F49; --aqua:#2FA396;
  --cool:#3B82C4; --heat:#D97706; --dhw:#C2410C;
  --bg:#FAFCFB; --panel:#F0F7F4; --ink:#14312D; --muted:#5B7470; --line:#D8E6E1;
  --maxw:1100px;
}
*{box-sizing:border-box;margin:0;padding:0}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}
body{font-family:'Public Sans',system-ui,sans-serif;background:var(--bg);color:var(--ink);line-height:1.65;font-size:16.5px}
h1,h2,h3{font-family:'Sora',system-ui,sans-serif;color:var(--teal-deep);line-height:1.18;letter-spacing:-.014em}
h1{font-size:clamp(1.85rem,4vw,2.7rem);font-weight:700}
h2{font-size:clamp(1.3rem,2.4vw,1.7rem);font-weight:650;margin-bottom:.8rem}
h3{font-size:1.05rem;font-weight:600;margin-bottom:.4rem}
p{margin-bottom:1rem;max-width:68ch}
a{color:var(--teal)}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.mono{font-family:'IBM Plex Mono',ui-monospace,monospace;font-size:.7rem;letter-spacing:.16em;text-transform:uppercase}
.kicker{display:inline-flex;align-items:center;gap:8px;color:var(--teal);font-family:'IBM Plex Mono',monospace;font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;margin-bottom:.7rem}
.kicker .dots{display:inline-flex;gap:3px}
.kicker .dots i{width:7px;height:7px;border-radius:50%;display:inline-block}
.dots i:nth-child(1){background:var(--cool)}.dots i:nth-child(2){background:var(--heat)}.dots i:nth-child(3){background:var(--dhw)}
/* header */
.top{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:40}
.top .wrap{display:flex;align-items:center;gap:10px;min-height:62px;max-width:1360px}
.brand{display:flex;align-items:center;gap:7px;text-decoration:none;flex-shrink:0}
.brand .bname{font-family:'Sora';font-weight:700;font-size:.94rem;color:var(--teal-deep)}
.brand .bby{font-family:'IBM Plex Mono',monospace;font-size:.5rem;letter-spacing:.18em;color:var(--muted);display:block;margin-top:1px;text-transform:uppercase}
nav.main{margin-left:auto;min-width:0}
nav.main ul{display:flex;gap:0;list-style:none;flex-wrap:wrap}
nav.main a{text-decoration:none;color:var(--ink);font-size:.85rem;font-weight:500;padding:7px 10px;border-radius:6px;white-space:nowrap}
nav.main a:hover{background:var(--panel)}
nav.main a[aria-current="page"]{background:var(--teal);color:#fff}
a:focus-visible{outline:2px solid var(--aqua);outline-offset:2px}
#nt{display:none}
.hamb{display:none;margin-left:auto;border:1px solid var(--line);background:#fff;border-radius:7px;padding:6px 12px;font:inherit;cursor:pointer;color:var(--teal-deep)}
.nusfun-link{display:flex;align-items:center;margin-left:6px;padding-left:6px;border-left:1px solid var(--line);flex-shrink:0}
.nusfun-link img{display:block;height:38px;width:auto}
@media(max-width:1379px){
  .hamb{display:block}
  nav.main{display:none;position:absolute;top:62px;left:0;right:0;background:#fff;border-bottom:2px solid var(--teal);padding:8px 22px 16px}
  nav.main ul{flex-direction:column}
  #nt:checked ~ nav.main{display:block}
  .nusfun-link{margin-left:10px;padding-left:10px}
  .nusfun-link img{height:32px}
}
/* hero */
.hero{padding:58px 0 50px;background:linear-gradient(180deg,#fff 0%,var(--bg) 100%);border-bottom:1px solid var(--line)}
.hero .wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center}
@media(max-width:900px){.hero .wrap{grid-template-columns:1fr}}
.hero .lede{font-size:1.06rem;color:var(--muted);margin-top:1rem;max-width:56ch}
.hero .support{color:var(--ink);font-weight:500;margin-top:.4rem}
.btnrow{display:flex;gap:10px;flex-wrap:wrap;margin-top:1.4rem}
.btn{display:inline-block;background:var(--teal);color:#fff;text-decoration:none;font-weight:600;font-size:.92rem;padding:12px 22px;border-radius:9px;border:1px solid var(--teal)}
.btn:hover{background:var(--teal-deep)}
.btn.ghost{background:#fff;color:var(--teal-deep);border-color:var(--line)}
.btn.ghost:hover{border-color:var(--teal)}
/* page hero (inner pages) */
.phero{padding:44px 0 36px;border-bottom:1px solid var(--line);background:#fff}
.crumb{font-size:.78rem;color:var(--muted);margin-bottom:.9rem}
.crumb a{color:var(--muted);text-decoration:none}
.phero .lede{color:var(--muted);font-size:1.02rem;margin-top:.8rem;max-width:62ch}
/* sections */
section.blk{padding:46px 0;border-bottom:1px solid var(--line)}
section.blk.alt{background:var(--panel)}
section.blk:last-of-type{border-bottom:none}
.grid2{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:20px}
.grid3{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}
.card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px}
.card p{font-size:.93rem;color:var(--muted);margin-bottom:.5rem;max-width:none}
.card .fn{display:flex;gap:6px;margin-bottom:.7rem}
.chip{font-family:'IBM Plex Mono',monospace;font-size:.62rem;letter-spacing:.1em;text-transform:uppercase;padding:3px 9px;border-radius:20px;border:1px solid var(--line);color:var(--muted)}
.chip.c{border-color:var(--cool);color:var(--cool)}.chip.h{border-color:var(--heat);color:var(--heat)}.chip.w{border-color:var(--dhw);color:var(--dhw)}
ul.list{list-style:none;margin:0 0 1rem}
ul.list li{padding:8px 0 8px 26px;position:relative;border-bottom:1px dashed var(--line);max-width:70ch}
ul.list li:last-child{border-bottom:none}
ul.list li::before{content:"";position:absolute;left:0;top:15px;width:12px;height:12px;border-radius:3px;background:var(--aqua);opacity:.85}
.steps{counter-reset:s;list-style:none;max-width:760px}
.steps li{counter-increment:s;position:relative;padding:14px 0 14px 58px;border-bottom:1px solid var(--line)}
.steps li:last-child{border-bottom:none}
.steps li::before{content:counter(s,decimal-leading-zero);position:absolute;left:0;top:12px;font-family:'IBM Plex Mono',monospace;color:var(--teal);font-size:.95rem;border:1px solid var(--line);background:#fff;border-radius:8px;padding:5px 8px}
.steps h3{margin-bottom:.15rem}
.steps p{font-size:.92rem;color:var(--muted);margin:0}
.note{background:#fff;border:1px solid var(--line);border-left:4px solid var(--heat);border-radius:9px;padding:14px 18px;margin:1rem 0;max-width:76ch}
.note p{margin:0;font-size:.9rem;color:var(--muted)}
.diagram{background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px}
.diagram figcaption{font-size:.78rem;color:var(--muted);padding:8px 6px 2px;text-align:center}
.cta{background:var(--teal-deep);border-radius:14px;color:#fff;padding:30px 30px;display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between}
.cta h2{color:#fff;margin:0}
.cta p{color:#CFE5E0;margin:.35rem 0 0;font-size:.93rem;max-width:56ch}
.cta .btn{background:#fff;color:var(--teal-deep);border-color:#fff}
.cta .btn.ghost{background:transparent;color:#fff;border-color:#7FB3AB}
table.plain{border-collapse:collapse;width:100%;max-width:780px;font-size:.92rem;background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden}
table.plain th{background:var(--panel);text-align:left;font-family:'Sora';font-weight:600;color:var(--teal-deep)}
table.plain th,table.plain td{padding:10px 15px;border-bottom:1px solid var(--line)}
table.plain tr:last-child td{border-bottom:none}
.imgcard{margin:0 0 1rem;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff}
.imgcard img{display:block;width:100%;height:auto}
.split2{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:center}
@media(max-width:860px){.split2{grid-template-columns:1fr}}
/* footer */
footer{background:#0C3B36;color:#BCD4CF;padding:44px 0 26px;margin-top:38px;font-size:.9rem}
footer h3{color:#fff;font-size:.95rem;margin-bottom:.6rem}
footer .cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:28px}
footer ul{list-style:none}
footer li{margin-bottom:.4rem}
footer a{color:#BCD4CF;text-decoration:none}
footer a:hover{color:#8FD6C9}
footer .fine{border-top:1px solid rgba(255,255,255,.15);margin-top:30px;padding-top:16px;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:.78rem;color:#7FA39D}
.skip{position:absolute;left:-9999px}
.skip:focus{left:10px;top:8px;background:#fff;color:var(--teal-deep);padding:8px 14px;z-index:99;border-radius:8px}
/* faq */
.faq{max-width:780px}
.faq-item{padding:16px 0;border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:none}
.faq-item h3{margin-bottom:.3rem}
.faq-item p{font-size:.92rem;color:var(--muted);margin:0}
/* diagram figure variants */
.diagram.wide{padding:20px}
.diagram .flowlbl{font:600 12px 'Public Sans',sans-serif;fill:#14312D}
.diagram .flowsub{font:500 9.5px 'IBM Plex Mono',monospace;fill:#5B7470;letter-spacing:.06em}
/* mobile sticky CTA bar */
.mcta{display:none}
@media(max-width:1039px){
  .mcta{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:50;background:#fff;border-top:1px solid var(--line);box-shadow:0 -4px 16px rgba(20,49,45,.08)}
  .mcta a{flex:1;text-align:center;padding:13px 8px;font:600 .82rem 'Public Sans',sans-serif;text-decoration:none;color:var(--teal-deep)}
  .mcta a:first-child{background:var(--teal);color:#fff}
  .mcta a:not(:first-child){border-left:1px solid var(--line)}
  body{padding-bottom:52px}
}