/* =========================================================
   JUPITER SCIENCE HUB PAGES  (jsh-*)
   Shared by: IIT-JEE hub, NEET hub, Science Articles hub,
   and later the subject hubs. Uses the global --jps-* tokens
   from the site header, with fallbacks.
   Plugin lists inside hubs are styled by zbl2 profile "jupiter_embed".
========================================================= */

.jsh{
  --c-blue:var(--jps-blue,#002CD0);
  --c-blue-dark:var(--jps-blue-dark,#00219E);
  --c-violet:var(--jps-violet,#8A2BEF);
  --c-pink:var(--jps-pink,#FF3D7F);
  --c-yellow:var(--jps-yellow,#FFD23F);
  --c-sky:var(--jps-sky,#28C7FF);
  --c-deep:var(--jps-deep,#101B4D);
  --c-border:var(--jps-border,#E8ECFF);
  --c-soft:var(--jps-soft,#F3F6FF);
  --c-muted:#5A6684;
  --c-pink-ink:#C4155A;
  --c-amber-ink:#8A5A00;
  --f-head:Sora,Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --f-body:Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  font-family:var(--f-body);color:var(--c-deep);line-height:1.7;overflow-x:clip;
}
.jsh *,.jsh *::before,.jsh *::after{box-sizing:border-box}
.jsh h1,.jsh h2,.jsh h3{font-family:var(--f-head);color:var(--c-deep);margin:0}
.jsh p{margin:0 0 1em}
.jsh a{color:var(--c-blue)}
.jsh-wrap{max-width:1180px;margin:0 auto;padding:0 20px}
.jsh-read{max-width:760px}

/* ---------- Breadcrumb ---------- */
.jsh-crumbs{margin:0 0 22px;font-size:13px}
.jsh-crumbs ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px;color:var(--c-muted)}
.jsh-crumbs li+li::before{content:"/";margin-right:6px;opacity:.6}
.jsh-crumbs a{color:var(--c-blue-dark);text-decoration:none}
.jsh-crumbs a:hover{text-decoration:underline}

/* ---------- Kicker / buttons ---------- */
.jsh-kicker{display:inline-flex;align-items:center;gap:8px;margin-bottom:16px;padding:7px 12px;border-radius:999px;background:rgba(0,44,208,.08);color:var(--c-blue);font-size:11px;font-weight:800;letter-spacing:.08em;text-transform:uppercase}
.jsh-kicker::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--c-pink)}
.jsh-btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:12px 20px;border-radius:999px;font-size:13px;font-weight:800;letter-spacing:.02em;text-decoration:none!important;border:1px solid transparent;transition:transform .18s ease,box-shadow .18s ease}
.jsh-btn:hover{transform:translateY(-2px)}
.jsh-btn-primary{color:#fff!important;background:linear-gradient(135deg,var(--c-blue),var(--c-violet));box-shadow:0 12px 26px rgba(0,44,208,.24)}
.jsh-btn-light{color:var(--c-blue-dark)!important;background:#fff;border-color:var(--c-border);box-shadow:0 8px 20px rgba(16,27,77,.08)}
.jsh-btn-yellow{color:var(--c-deep)!important;background:var(--c-yellow)}
.jsh-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}

/* ---------- Hero ---------- */
.jsh-hero{padding:44px 0 60px;border-bottom:1px solid var(--c-border);background:radial-gradient(circle at 14% 8%,rgba(255,61,127,.10),transparent 30%),radial-gradient(circle at 88% 6%,rgba(255,210,63,.16),transparent 32%),linear-gradient(180deg,#fff 0%,#FFF8FE 100%)}
.jsh-hero-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);gap:48px;align-items:start}
.jsh-hero h1{font-size:clamp(32px,4.6vw,56px);line-height:1.05;font-weight:800;letter-spacing:-.04em;margin-bottom:18px}
.jsh-lead{font-size:18px;color:#3B4668;max-width:640px}
.jsh-hero p:last-of-type{margin-bottom:0}

/* At-a-glance panel */
.jsh-glance{position:relative;padding:26px;border-radius:24px;background:#fff;border:1px solid var(--c-border);box-shadow:0 22px 50px rgba(16,27,77,.10)}
.jsh-glance::before{content:"";position:absolute;left:26px;right:26px;top:0;height:4px;border-radius:0 0 4px 4px;background:linear-gradient(90deg,var(--c-blue),var(--c-violet),var(--c-pink),var(--c-yellow))}
.jsh-glance h2{font-size:17px;font-weight:800;letter-spacing:-.01em;margin:6px 0 14px}
.jsh-glance dl{margin:0;display:grid;gap:0}
.jsh-glance dl>div{display:grid;grid-template-columns:110px 1fr;gap:12px;padding:10px 0;border-top:1px solid var(--c-border);font-size:14px}
.jsh-glance dt{color:var(--c-muted);font-weight:700}
.jsh-glance dd{margin:0;font-weight:600}
.jsh-fine{margin:14px 0 0;color:var(--c-muted);font-size:12.5px;line-height:1.55}

/* ---------- Sections ---------- */
.jsh-section{padding:64px 0}
.jsh-soft{background:var(--c-soft)}
.jsh-head{max-width:760px;margin:0 0 30px}
.jsh-head h2{font-size:clamp(26px,3.2vw,38px);line-height:1.1;font-weight:800;letter-spacing:-.03em;margin-bottom:12px}
.jsh-head p{color:var(--c-muted);font-size:16px;margin:0}
.jsh-eyebrow{display:block;margin-bottom:10px;color:var(--c-blue);font-size:11px;font-weight:800;letter-spacing:.09em;text-transform:uppercase}

/* ---------- Card grids ---------- */
.jsh-grid{display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.jsh-grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.jsh-grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.jsh-grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.jsh-card{position:relative;display:flex;flex-direction:column;padding:24px;border-radius:20px;background:#fff;border:1px solid var(--c-border);box-shadow:0 12px 30px rgba(16,27,77,.06);overflow:hidden;color:var(--c-deep)!important;text-decoration:none!important;transition:transform .18s ease,box-shadow .18s ease}
.jsh-card::before{content:"";position:absolute;left:0;top:0;width:100%;height:5px;background:var(--accent,var(--c-blue))}
a.jsh-card:hover{transform:translateY(-4px);box-shadow:0 20px 42px rgba(16,27,77,.12)}
.jsh-card h3{margin:6px 0 8px;font-size:20px;line-height:1.2;font-weight:800;letter-spacing:-.02em}
.jsh-card p{margin:0 0 14px;color:var(--c-muted);font-size:14.5px;line-height:1.65}
.jsh-card .jsh-go{margin-top:auto;color:var(--ink,var(--c-blue));font-size:12px;font-weight:800;letter-spacing:.05em;text-transform:uppercase}
.jsh-physics{--accent:#002CD0;--ink:#002CD0}
.jsh-maths{--accent:#8A2BEF;--ink:#7A22DA}
.jsh-chem{--accent:#FF3D7F;--ink:var(--c-pink-ink)}
.jsh-bio{--accent:#FFD23F;--ink:var(--c-amber-ink)}
.jsh-astro{--accent:#28C7FF;--ink:#006A94}
.jsh-cs{--accent:#101B4D;--ink:#101B4D}

/* Topic chips */
.jsh-chips{list-style:none;margin:0 0 16px;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.jsh-chips li,.jsh-chips a{display:inline-flex;align-items:center;min-height:32px;padding:5px 11px;border-radius:999px;background:var(--c-soft);color:var(--c-deep);font-size:12.5px;font-weight:700;text-decoration:none!important}
.jsh-chips-links li{padding:0;background:none;min-height:0}
.jsh-chips a{color:var(--c-blue-dark)!important;border:1px solid var(--c-border);background:#fff}
.jsh-chips a:hover{background:var(--c-blue);color:#fff!important;border-color:var(--c-blue)}

/* ---------- Steps ---------- */
.jsh-steps{list-style:none;margin:0;padding:0;counter-reset:s;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.jsh-steps li{counter-increment:s;position:relative;padding:22px;border-radius:20px;background:#fff;border:1px solid var(--c-border)}
.jsh-steps li::before{content:counter(s);display:flex;align-items:center;justify-content:center;width:36px;height:36px;margin-bottom:14px;border-radius:12px;background:linear-gradient(135deg,var(--c-blue),var(--c-violet));color:#fff;font-family:var(--f-head);font-weight:800}
.jsh-steps h3{font-size:17px;font-weight:800;margin-bottom:8px}
.jsh-steps p{margin:0;color:var(--c-muted);font-size:14.5px;line-height:1.65}

/* ---------- Two-column text ---------- */
.jsh-split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:40px;align-items:start}
.jsh-split h2{font-size:clamp(24px,3vw,34px);line-height:1.12;font-weight:800;letter-spacing:-.03em;margin-bottom:14px}
.jsh-split p{color:#3B4668}

/* ---------- Lists ---------- */
.jsh-list{list-style:none;margin:0;padding:0;display:grid;gap:0}
.jsh-list li{padding:14px 0;border-top:1px solid var(--c-border)}
.jsh-list li:last-child{border-bottom:1px solid var(--c-border)}
.jsh-list a{font-weight:800;text-decoration:none}
.jsh-list a:hover{text-decoration:underline}
.jsh-list span{display:block;margin-top:2px;color:var(--c-muted);font-size:14px}
.jsh-tag{display:inline-block;margin-right:8px;padding:2px 8px;border-radius:999px;background:var(--c-soft);color:var(--c-blue-dark);font-size:11px;font-weight:800;letter-spacing:.05em;text-transform:uppercase;vertical-align:1px}

/* ---------- Accordions (native details) ---------- */
.jsh-acc{border-top:1px solid var(--c-border)}
.jsh-acc details{border-bottom:1px solid var(--c-border)}
.jsh-acc summary{cursor:pointer;list-style:none;padding:18px 40px 18px 0;position:relative;font-family:var(--f-head);font-size:17px;font-weight:700;line-height:1.35}
.jsh-acc summary::-webkit-details-marker{display:none}
.jsh-acc summary::after{content:"+";position:absolute;right:6px;top:50%;transform:translateY(-50%);font-size:24px;font-weight:400;color:var(--c-blue)}
.jsh-acc details[open] summary::after{content:"\2212"}
.jsh-acc summary:focus-visible{outline:3px solid var(--c-blue);outline-offset:2px;border-radius:6px}
.jsh-acc .jsh-body{padding:0 0 20px;color:#3B4668;font-size:15.5px;max-width:820px}
.jsh-acc .jsh-body p:last-child{margin-bottom:0}
.jsh-acc .jsh-body h3{font-size:14px;font-weight:800;letter-spacing:.04em;text-transform:uppercase;color:var(--c-blue-dark);margin:16px 0 8px}
.jsh-acc .jsh-body h3:first-child{margin-top:0}

/* ---------- Callout ---------- */
.jsh-note{padding:20px 22px;border-radius:16px;background:#FFFBE8;border:1px solid #F3E2A0;color:#4A3B00;font-size:14.5px}
.jsh-note strong{color:#3A2E00}
.jsh-note p:last-child{margin-bottom:0}

/* ---------- Table ---------- */
.jsh-table-wrap{overflow-x:auto;border:1px solid var(--c-border);border-radius:16px;background:#fff}
.jsh-table{width:100%;border-collapse:collapse;font-size:14.5px;min-width:560px}
.jsh-table th,.jsh-table td{padding:13px 16px;text-align:left;vertical-align:top;border-bottom:1px solid var(--c-border)}
.jsh-table thead th{background:var(--c-soft);font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--c-blue-dark)}
.jsh-table tr:last-child td{border-bottom:0}

/* ---------- Latest (plugin) wrapper ---------- */
.jsh-latest{margin-top:8px}
.jsh-more{margin:26px 0 0}

/* ---------- Closing band ---------- */
.jsh-band{padding:60px 0;color:#fff;background:linear-gradient(135deg,#101B4D 0%,#00219E 55%,#8A2BEF 100%)}
.jsh-band h2{color:#fff;font-size:clamp(26px,3.4vw,40px);line-height:1.1;font-weight:800;letter-spacing:-.035em;margin-bottom:14px}
.jsh-band p{color:#fff;opacity:.92;max-width:680px}
.jsh-band .jsh-actions{margin-top:22px}
.jsh-band a:focus-visible{outline:3px solid #fff;outline-offset:3px}

/* ---------- Byline / disclaimer ---------- */
.jsh-by{padding:28px 0 8px;color:var(--c-muted);font-size:13.5px}
.jsh-by a{font-weight:700}

.jsh a:focus-visible{outline:3px solid var(--c-blue);outline-offset:3px}
@media (prefers-reduced-motion:reduce){.jsh *{transition:none!important}.jsh-btn:hover,a.jsh-card:hover{transform:none}}

/* ---------- Responsive ---------- */
@media (max-width:980px){
  .jsh-hero-grid,.jsh-split{grid-template-columns:1fr;gap:32px}
  .jsh-grid-3,.jsh-grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .jsh-steps{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:640px){
  .jsh-wrap{padding:0 16px}
  .jsh-hero{padding:32px 0 44px}
  .jsh-section{padding:46px 0}
  .jsh-lead{font-size:16px}
  .jsh-grid-2,.jsh-grid-3,.jsh-grid-4,.jsh-steps{grid-template-columns:1fr}
  .jsh-actions{flex-direction:column}
  .jsh-btn{width:100%}
  .jsh-glance{padding:20px}
  .jsh-glance dl>div{grid-template-columns:1fr;gap:2px}
  .jsh-band{padding:46px 0}
}
.jsh-mt{margin-top:26px}