/* ACT Prep Hub — W2 quality pass stylesheet (2026-09)
   Palette derived from the site's existing navy/gold theme. One file, no JS. */
:root{
  --navy-900:#081729;
  --navy-800:#0b1f3a;
  --navy-700:#142b50;
  --navy-600:#1d3a6b;
  --navy-100:#d7e0ee;
  --gold-600:#8f6419;
  --gold-500:#c8923a;
  --gold-400:#e0b265;
  --gold-100:#f5e6c5;
  --cream-50:#faf6ee;
  --cream-100:#f4ecd9;
  --paper:#fdfaf3;
  --ink:#1c2430;
  --muted:#4f5a68;
  --border:#e3ddcf;
  --success:#2f7d4f;
  --error:#b14242;
  --radius:8px;
  --radius-lg:12px;
  --maxw:1200px;
  --shadow-sm:0 1px 2px rgba(11,31,58,.06),0 1px 1px rgba(11,31,58,.04);
  --shadow-md:0 6px 16px -8px rgba(11,31,58,.18),0 2px 4px rgba(11,31,58,.06);
  --shadow-lg:0 24px 48px -16px rgba(11,31,58,.2);
  --sp-1:.5rem;--sp-2:1rem;--sp-3:1.5rem;--sp-4:2rem;--sp-5:3rem;--sp-6:4.5rem;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
}
body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  font-size:1.02rem;line-height:1.6;color:var(--ink);background:var(--paper);
  -webkit-font-smoothing:antialiased}
h1,h2,h3,h4,h5{font-family:'Playfair Display',Georgia,serif;font-weight:700;
  color:var(--navy-800);line-height:1.2;margin:0 0 .5em;letter-spacing:-.01em}
h1{font-size:clamp(2rem,4vw,2.4rem)}
h2{font-size:clamp(1.35rem,2.4vw,1.55rem)}
h3{font-size:1.15rem}
h4{font-size:1.05rem}
h5{font-size:.95rem}
p{margin:0 0 1em}
a{color:var(--navy-700);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--gold-600)}
img{max-width:100%;height:auto;display:block}
hr{border:0;border-top:1px solid var(--border);margin:var(--sp-3) 0}
:focus-visible{outline:3px solid var(--gold-500);outline-offset:2px;border-radius:2px}
.container{max-width:var(--maxw);margin:0 auto;padding:0 1.25rem}
.skip{position:absolute;left:-9999px}
.skip:focus{left:1rem;top:1rem;background:var(--gold-500);padding:.5rem 1rem;border-radius:4px;z-index:60;color:var(--navy-900);font-weight:700}

/* ---- topbar (source line; collapses on mobile) ---- */
.topbar{background:var(--navy-900);color:var(--cream-100);font-size:.78rem;padding:.4rem 0}
.topbar .container{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap}
.topbar a{color:var(--gold-400);text-decoration:none}
.topbar a:hover{color:var(--gold-100)}
@media (max-width:560px){.topbar span:last-child{display:none}}

/* header: brand + wrapped nav row (no overlap, no JS) */
.site-header{background:linear-gradient(180deg,var(--navy-800),var(--navy-700));color:#fff;border-bottom:3px solid var(--gold-500)}
.site-header .container{display:flex;align-items:center;justify-content:space-between;gap:.75rem;padding-top:.9rem;padding-bottom:.9rem}
.brand{display:flex;align-items:center;gap:.7rem;text-decoration:none;color:#fff;flex-shrink:0}
.brand-mark{width:42px;height:42px;background:var(--gold-500);color:var(--navy-900);display:grid;place-items:center;font-family:'Playfair Display',serif;font-weight:800;font-size:1.4rem;border-radius:8px;box-shadow:inset 0 -3px 0 rgba(0,0,0,.15)}
.brand-name{font-family:'Playfair Display',serif;font-weight:700;font-size:1.45rem;letter-spacing:.02em;line-height:1.15}
.brand-tag{font-size:.68rem;color:var(--gold-400);letter-spacing:.18em;text-transform:uppercase}
.nav{display:flex;flex-wrap:wrap;align-items:center;gap:.15rem}
.nav a{color:var(--cream-50);text-decoration:none;padding:.45rem .7rem;font-weight:500;font-size:.92rem;border-radius:6px}
.nav a:hover,.nav a.is-active{background:rgba(212,162,74,.18);color:var(--gold-400)}
.nav .cta{background:var(--gold-500);color:var(--navy-900);font-weight:700;margin-left:.35rem}
.nav .cta:hover{background:var(--gold-400);color:var(--navy-900)}
@media (max-width:767px){
  .site-header .container{flex-direction:column;align-items:stretch;gap:.5rem}
  .nav{justify-content:flex-start;gap:.15rem;row-gap:.25rem}
  .nav a{padding:.4rem .6rem;font-size:.88rem}
  .nav .cta{margin-left:auto}
}
@media (min-width:768px){.nav{justify-content:flex-end}}

/* hero */
.hero{background:linear-gradient(135deg,rgba(8,23,41,.94),rgba(20,43,80,.88)),radial-gradient(circle at 80% 20%,rgba(212,162,74,.16),transparent 60%);background-color:var(--navy-800);color:#fff;padding:var(--sp-5) 0}
.hero h1{color:#fff;max-width:24ch}
.hero .lede{font-size:1.1rem;max-width:56ch;color:var(--cream-100)}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:var(--sp-5);align-items:center}
.hero-art{background:rgba(255,255,255,.04);border:1px solid rgba(212,162,74,.25);border-radius:var(--radius-lg);padding:.5rem;box-shadow:var(--shadow-md)}
.hero-art img{border-radius:10px;height:auto}
.hero-stats{display:flex;gap:1.25rem;margin-top:1.5rem;flex-wrap:wrap}
.hero-stat{border-left:2px solid var(--gold-500);padding-left:.9rem}
.hero-stat strong{display:block;font-family:'Playfair Display',serif;font-size:1.6rem;color:var(--gold-400)}
.hero-stat span{font-size:.78rem;color:var(--cream-100);text-transform:uppercase;letter-spacing:.1em}
.hero-cta{display:flex;gap:.75rem;margin-top:1.5rem;flex-wrap:wrap}
@media (max-width:767px){.hero{padding:2.5rem 0}.hero-grid{grid-template-columns:1fr;gap:1.75rem}.hero-art{max-width:420px}}

/* stat chips */
.stat-chips{display:flex;flex-wrap:wrap;gap:.6rem;margin-top:1.25rem}
.stat-chip{display:inline-flex;align-items:baseline;gap:.4rem;background:var(--cream-50);border:1px solid var(--border);border-radius:999px;padding:.35rem .8rem;font-size:.85rem;color:var(--muted)}
.stat-chip strong{color:var(--navy-800);font-size:1.02rem}

/* buttons */
.btn{display:inline-block;padding:.8rem 1.35rem;background:var(--gold-500);color:var(--navy-900);font-weight:700;font-size:.95rem;text-decoration:none;border-radius:var(--radius);border:1px solid var(--gold-600);box-shadow:var(--shadow-sm)}
.btn:hover{background:var(--gold-400);color:var(--navy-900)}
.btn-ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.35)}
.btn-ghost:hover{background:rgba(255,255,255,.08);color:#fff}
.btn-secondary{background:#fff;color:var(--navy-800);border-color:var(--border)}
.btn-secondary:hover{background:var(--cream-50);color:var(--navy-800)}

/* sections */
.section{padding:var(--sp-5) 0}
.section-tight{padding:var(--sp-4) 0}
.section-cream{background:var(--cream-50);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:1rem;flex-wrap:wrap;margin-bottom:1.75rem}
.section-head h2{margin:0}
.eyebrow{display:inline-block;font-size:.76rem;letter-spacing:.18em;color:var(--gold-600);text-transform:uppercase;font-weight:700;margin-bottom:.5rem}

/* card grids */
.subject-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.5rem}
.subject-card{display:block;background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;text-decoration:none;color:var(--ink);box-shadow:var(--shadow-sm);transition:transform .15s,box-shadow .15s,border-color .15s}
.subject-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--gold-500);color:var(--ink)}
.subject-card .img{aspect-ratio:4/3;background:var(--navy-800)}
.subject-card .img img{width:100%;height:100%;object-fit:cover}
.subject-card .body{padding:1.2rem 1.35rem 1.4rem}
.subject-card h3{color:var(--navy-800);margin-bottom:.4rem;font-size:1.2rem}
.subject-card .meta{font-size:.76rem;color:var(--gold-600);letter-spacing:.1em;text-transform:uppercase;font-weight:700}
.subject-card .desc{color:var(--muted);font-size:.93rem;margin:.5rem 0 0}
.subject-card .arrow{display:inline-block;margin-top:.85rem;color:var(--navy-700);font-weight:600;font-size:.9rem}
.subject-card .diff-row{margin-top:.85rem}
.topic-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:1rem}
.topic-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.15rem 1.3rem;text-decoration:none;color:var(--ink);box-shadow:var(--shadow-sm);transition:border-color .15s,transform .15s;display:block}
.topic-card:hover{border-color:var(--gold-500);transform:translateY(-2px);color:var(--ink)}
.topic-card h3{font-size:1.08rem;margin:.6rem 0 .35rem}
.topic-card .stat{font-size:.82rem;color:var(--muted)}
.test-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:1.25rem}
.test-card{display:block;background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.35rem;text-decoration:none;color:var(--ink);box-shadow:var(--shadow-sm);transition:border-color .15s,transform .15s}
.test-card:hover{border-color:var(--gold-500);transform:translateY(-2px);color:var(--ink)}
.test-card .num{font-family:'Playfair Display',serif;font-size:1.9rem;color:var(--gold-600);line-height:1}
.test-card h3{margin:.4rem 0 .5rem;font-size:1.1rem}
.test-card .test-meta{font-size:.85rem;color:var(--muted)}
.test-tags{margin-top:.85rem;display:flex;gap:.35rem;flex-wrap:wrap}
.test-tags .badge{background:var(--cream-100);color:var(--navy-700)}

/* layout grid */
.layout-2col{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:var(--sp-4)}
@media (max-width:900px){.layout-2col{grid-template-columns:1fr}}

.prose{max-width:70ch}
.prose h2{margin-top:var(--sp-4)}
.prose h3{margin-top:var(--sp-3)}
.prose ul,.prose ol{padding-left:1.4rem}
.prose blockquote{border-left:3px solid var(--gold-500);padding-left:1rem;color:var(--muted);font-style:italic;margin:var(--sp-3) 0}
.prose code{background:var(--cream-100);padding:.1em .3em;border-radius:4px;font-size:.9em}

/* sidebar */
.sidebar>*+*{margin-top:var(--sp-3)}
.sidebar-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.2rem 1.35rem;box-shadow:var(--shadow-sm)}
.sidebar-card h4{margin:0 0 .85rem;padding-bottom:.6rem;border-bottom:2px solid var(--gold-500);font-size:.92rem;text-transform:uppercase;letter-spacing:.1em;color:var(--navy-800)}
.sidebar-list{list-style:none;padding:0;margin:0}
.sidebar-list li{border-bottom:1px dashed var(--border)}
.sidebar-list li:last-child{border-bottom:0}
.sidebar-list a{display:block;padding:.5rem 0;color:var(--navy-700);text-decoration:none;font-size:.92rem}
.sidebar-list a:hover{color:var(--gold-600)}
.sidebar-tip{background:var(--navy-800);color:var(--cream-100);border-radius:var(--radius-lg);padding:1.2rem 1.35rem}
.sidebar-tip h4{color:var(--gold-400);border-color:var(--gold-500)}
.sidebar-tip p{font-size:.9rem;margin:0}

/* drill list */
.q-list{list-style:none;padding:0;margin:0;counter-reset:q}
.q-row{display:grid;grid-template-columns:36px 1fr auto;gap:.9rem;align-items:center;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:.75rem 1rem;margin-bottom:.55rem;box-shadow:var(--shadow-sm);text-decoration:none;color:var(--ink);transition:border-color .15s}
.q-row:hover{border-color:var(--gold-500);color:var(--ink)}
.q-num{display:grid;place-items:center;background:var(--cream-100);color:var(--navy-700);font-weight:700;font-size:.85rem;width:36px;height:36px;border-radius:8px}
.q-title{font-weight:600;color:var(--navy-800);font-size:.96rem}
.q-meta{color:var(--muted);font-size:.8rem;margin-top:.15rem}

/* badges */
.badge{display:inline-block;padding:.2rem .55rem;border-radius:999px;font-size:.7rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase}
.badge-easy{background:#e1f1e6;color:#1f6c3a;border:1px solid #b6dcc1}
.badge-medium{background:#fcf0d9;color:#7c560f;border:1px solid #eccf92}
.badge-hard{background:#f7dede;color:#7d2828;border:1px solid #ecb7b7}
.badge-navy{background:var(--navy-800);color:var(--gold-400)}

/* question detail */
.q-stem{background:#fff;border:1px solid var(--border);border-left:4px solid var(--gold-500);border-radius:var(--radius-lg);padding:1.4rem 1.6rem;margin:1rem 0 1.5rem;font-size:1.02rem;line-height:1.65;box-shadow:var(--shadow-sm)}
.q-passage{background:var(--cream-50);border:1px solid var(--border);padding:1.2rem 1.4rem;border-radius:var(--radius);font-family:Georgia,serif;font-size:1rem;line-height:1.7;margin:1rem 0 1.5rem}
.q-passage h5{font-family:'Playfair Display',serif;font-size:.95rem;margin:0 0 .5rem;color:var(--navy-700);text-transform:uppercase;letter-spacing:.1em}
.q-choices{list-style:none;padding:0;margin:0 0 var(--sp-4);counter-reset:c}
.q-choices li{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:.85rem 1rem .85rem 3rem;margin-bottom:.5rem;position:relative;font-size:1rem}
.q-choices li::before{counter-increment:c;content:counter(c,upper-alpha);position:absolute;left:.85rem;top:50%;transform:translateY(-50%);width:28px;height:28px;background:var(--cream-100);color:var(--navy-700);border:1px solid var(--border);border-radius:50%;display:grid;place-items:center;font-weight:700;font-size:.85rem}
.q-choices li.is-correct{border-color:var(--success);background:#f1faf3}
.q-choices li.is-correct::before{background:var(--success);color:#fff;border-color:var(--success)}
.answer-box{background:var(--cream-50);border:1px solid var(--border);border-left:4px solid var(--success);padding:1.2rem 1.4rem;border-radius:var(--radius);margin:var(--sp-3) 0}
.answer-box h3{margin-top:0;color:var(--navy-800);display:flex;align-items:center;gap:.5rem;font-size:1.05rem}
.answer-box .key{display:inline-grid;place-items:center;width:28px;height:28px;background:var(--success);color:#fff;border-radius:50%;font-weight:700;font-size:.85rem;flex-shrink:0}

/* meters */
.meter{display:grid;grid-template-columns:80px 1fr 56px;gap:.75rem;align-items:center;padding:.4rem 0}
.meter-label{font-size:.82rem;color:var(--muted)}
.meter-track{height:8px;background:var(--cream-100);border-radius:999px;overflow:hidden}
.meter-fill{height:100%;background:linear-gradient(90deg,var(--gold-500),var(--gold-600))}
.meter-val{font-weight:700;font-size:.88rem;color:var(--navy-800);text-align:right}

/* recommended / related */
.recommended{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.35rem 1.45rem;margin-top:var(--sp-4)}
.recommended h4{margin:0 0 .85rem;padding-bottom:.5rem;border-bottom:2px solid var(--gold-500);font-size:.9rem;text-transform:uppercase;letter-spacing:.1em;color:var(--navy-800)}
.recommended ul{list-style:none;padding:0;margin:0}
.recommended li{border-bottom:1px dashed var(--border);padding:.6rem 0}
.recommended li:last-child{border-bottom:0}
.recommended a{color:var(--navy-700);text-decoration:none;font-weight:500;font-size:.94rem}
.recommended a:hover{color:var(--gold-600)}
.recommended .src{display:block;color:var(--muted);font-size:.78rem;margin-top:.15rem}

/* breadcrumb */
.breadcrumb{font-size:.83rem;color:var(--muted);padding:1rem 0 .25rem}
.breadcrumb a{color:var(--navy-700);text-decoration:none}
.breadcrumb a:hover{color:var(--gold-600)}
.breadcrumb .sep{margin:0 .4rem;color:var(--muted)}

/* page head */
.page-head{padding:var(--sp-4) 0 var(--sp-2)}
.page-head h1{margin:.3rem 0 .5rem}
.page-head .lede{color:var(--muted);max-width:70ch;font-size:1.03rem}

/* subject hero (hub landing) */
.subject-hero{background:linear-gradient(135deg,var(--navy-800),var(--navy-700));color:#fff;padding:var(--sp-5) 0;border-bottom:3px solid var(--gold-500)}
.subject-hero .container{display:grid;grid-template-columns:1.4fr 1fr;gap:var(--sp-4);align-items:center}
.subject-hero h1{color:#fff}
.subject-hero p{color:var(--cream-100);max-width:56ch}
.subject-hero img{border-radius:var(--radius-lg);box-shadow:var(--shadow-md);height:auto;max-height:260px;width:auto;max-width:100%}
.subject-hero .meters{margin-top:1.5rem}
.subject-hero .meters .meter-label{color:var(--cream-100)}
.subject-hero .meters .meter-val{color:var(--gold-400)}
.subject-hero .meters .meter-track{background:rgba(255,255,255,.12)}
@media (max-width:767px){.subject-hero .container{grid-template-columns:1fr}.subject-hero img{max-height:160px}}

/* data tables: zebra + horizontal scroll */
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:1rem 0}
.data-table{width:100%;border-collapse:collapse;margin:1rem 0;font-size:.93rem}
.data-table th,.data-table td{border:1px solid var(--border);padding:.55rem .75rem;text-align:center}
.data-table th{background:var(--navy-800);color:#fff;font-weight:600;letter-spacing:.04em;position:sticky;left:0;z-index:1}
.data-table tbody tr:nth-child(odd){background:var(--cream-50)}
@media print{.data-table{font-size:9pt}.data-table th{background:#eee;color:#000}}

/* footer (4-col, dark band) */
.site-footer{background:var(--navy-900);color:var(--cream-100);padding:var(--sp-5) 0 var(--sp-3);margin-top:var(--sp-6);border-top:4px solid var(--gold-500)}
.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:2.25rem}
.footer-about{margin-top:1rem;max-width:38ch;font-size:.9rem;color:rgba(245,230,197,.85)}
.site-footer h5{color:var(--gold-400);font-family:'Playfair Display',serif;font-size:.9rem;text-transform:uppercase;letter-spacing:.14em;margin:0 0 1rem}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin:.4rem 0}
.site-footer a{color:var(--cream-100);text-decoration:none;font-size:.92rem}
.site-footer a:hover{color:var(--gold-400)}
.footer-legal{grid-column:1/-1;padding-top:1.5rem;border-top:1px solid rgba(255,255,255,.1);margin-top:1.5rem;font-size:.8rem;color:rgba(245,230,197,.65);display:flex;justify-content:space-between;flex-wrap:wrap;gap:1rem}
@media (max-width:767px){.footer-grid{grid-template-columns:1fr 1fr}}

/* pagination */
.pager{display:flex;gap:.5rem;justify-content:center;margin:var(--sp-4) 0 0;flex-wrap:wrap}
.pager a,.pager span{display:inline-block;padding:.5rem .85rem;border:1px solid var(--border);border-radius:var(--radius);background:#fff;color:var(--navy-700);text-decoration:none;font-size:.9rem}
.pager a:hover{border-color:var(--gold-500);color:var(--gold-600)}
.pager .current{background:var(--navy-800);color:#fff;border-color:var(--navy-800)}

/* misc */
.tag-row{display:flex;gap:.4rem;flex-wrap:wrap;margin:.5rem 0}
.divider-gold{width:60px;height:3px;background:var(--gold-500);margin:0 0 1.25rem;border-radius:2px}
.counter-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1rem;margin:1.5rem 0}
.counter{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.05rem 1.2rem;text-align:center}
.counter strong{display:block;font-family:'Playfair Display',serif;font-size:1.7rem;color:var(--gold-600)}
.counter span{font-size:.76rem;text-transform:uppercase;letter-spacing:.12em;color:var(--muted)}
.cta-band{background:linear-gradient(135deg,var(--navy-800),var(--navy-700));color:#fff;padding:var(--sp-5) 0;margin-top:var(--sp-4);text-align:center}
.cta-band h2{color:#fff}
.cta-band p{color:var(--cream-100);max-width:56ch;margin:.5rem auto 1.5rem}
.calc-form{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.5rem;max-width:540px}
.calc-form label{display:block;font-weight:600;color:var(--navy-800);margin:.5rem 0 .25rem}
.calc-form input{width:100%;padding:.55rem .75rem;border:1px solid var(--border);border-radius:8px;font:inherit}
.notice{background:var(--cream-50);border:1px solid var(--border);border-radius:var(--radius);padding:1rem 1.25rem;color:var(--muted);font-size:.9rem;margin:1.5rem 0}

/* small screens */
@media (max-width:767px){
  .section{padding:var(--sp-4) 0}
  .page-head{padding:1.5rem 0 .75rem}
  .layout-2col{gap:var(--sp-3)}
  .hero-grid{gap:1.5rem}
  .data-table{font-size:.85rem}
}
@media (max-width:360px){
  body{font-size:.98rem}
  .hero-stat strong{font-size:1.3rem}
  .stat-chip{width:100%}
}

/* print */
@media print{
  .topbar,.site-header,.site-footer,.hero-cta,.btn,.pager,.ad-slot,.recommended{display:none!important}
  body{background:#fff;color:#000}
  .layout-2col{grid-template-columns:1fr}
  .data-table{font-size:10pt}
  a{color:inherit;text-decoration:none}
}

/* focus visibility */
a:focus-visible,button:focus-visible{outline:3px solid var(--gold-500);outline-offset:2px}

/* utility: visually hidden */
.visually-hidden{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}