/* iSATPrep — modern SaaS */
:root{
  --navy:#152647;
  --navy-2:#0F1E3D;
  --navy-3:#1B2D52;
  --purple:#6D5BD0;
  --purple-deep:#4F3DBE;
  --purple-soft:#EFEBFF;
  --amber:#F59E0B;
  --amber-deep:#C97A05;
  --bg:#FFFFFF;
  --bg-2:#F7F6FB;
  --rule:#E7E5EE;
  --ink:#1F2937;
  --ink-soft:#4B5563;
  --muted:#9CA3AF;
  --serif:"Inter", system-ui, sans-serif;
  --sans:"Inter", system-ui, sans-serif;
  --mono:"JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --pad-y: 8rem;
  --maxw: 1240px;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--sans);
  background:var(--bg);
  color:var(--ink);
  font-size:17px;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

/* TYPE */
.serif{font-family:var(--serif); font-optical-sizing:auto;}
.mono{font-family:var(--mono); letter-spacing:-0.01em}
h1,h2,h3,h4{font-family:var(--serif); color:var(--navy); margin:0; font-weight:600; letter-spacing:-0.02em; text-wrap:balance;}
h1{font-size:clamp(44px, 6.2vw, 80px); line-height:1.05; letter-spacing:-0.035em; font-weight:700;}
h2{font-size:clamp(32px, 3.8vw, 50px); line-height:1.08; letter-spacing:-0.025em; font-weight:700;}
h3{font-size:clamp(22px, 2vw, 28px); line-height:1.2;}
p{margin:0 0 1em; text-wrap:pretty;}
a{color:inherit; text-decoration:none}

.eyebrow{
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:0.18em;
  text-transform:uppercase;
  color:var(--ink-soft);
  display:inline-flex; align-items:center; gap:8px;
  flex-wrap:nowrap; white-space:nowrap;
}
.eyebrow::before{
  content:""; width:18px; height:1px; background:currentColor; opacity:0.5;
}

/* LAYOUT */
.wrap{max-width:var(--maxw); margin:0 auto; padding:0 32px;}
section{padding:var(--pad-y) 0;}
.rule{border:0; border-top:1px solid var(--rule); margin:0;}

/* NAV */
.nav{
  position:sticky; top:0; z-index:50;
  background:rgba(255,255,255,0.82);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--rule);
}
.nav-inner{display:flex; align-items:center; justify-content:space-between; height:64px;}
.brand{display:flex; align-items:center; gap:10px; font-family:var(--serif); color:var(--navy); font-size:20px; font-weight:500; letter-spacing:-0.01em;}
.brand-mark{
  width:28px; height:28px; border:1.5px solid var(--navy); border-radius:6px;
  display:grid; place-items:center; color:var(--navy); font-family:var(--mono); font-size:12px; font-weight:600;
  background:var(--bg);
  position:relative;
}
.brand-mark::after{
  content:""; position:absolute; right:-3px; bottom:-3px; width:8px; height:8px; background:var(--purple); border-radius:1px;
}
.nav-links{display:flex; gap:28px; align-items:center; font-size:14px; color:var(--ink-soft);}
.nav-links a{transition:color .15s}
.nav-links a:hover{color:var(--navy)}
.nav-cta{display:flex; gap:10px; align-items:center;}
@media (max-width: 800px){
  .nav-links{display:none}
}

/* BUTTONS */
.btn{
  display:inline-flex; align-items:center; gap:8px;
  font-family:var(--sans); font-size:15px; font-weight:600;
  padding:12px 22px; border-radius:10px; cursor:pointer;
  transition:transform .12s ease, box-shadow .15s ease, background .15s, border-color .15s, color .15s;
  border:1px solid transparent;
  white-space:nowrap;
}
.btn-primary{
  background:var(--purple); color:#fff; border-color:var(--purple);
  box-shadow:0 4px 14px -4px rgba(79,61,190,0.4);
}
.btn-primary:hover{background:var(--purple-deep); border-color:var(--purple-deep); color:#fff; transform:translateY(-1px); box-shadow:0 12px 28px -10px rgba(79, 61, 190, 0.55)}
.btn-outline{background:transparent; color:var(--navy); border-color:var(--navy);}
.btn-outline:hover{background:transparent; color:var(--purple); border-color:var(--purple);}
.btn-ghost{background:transparent; color:var(--navy); border-color:var(--rule);}
.btn-ghost:hover{color:var(--purple); border-color:var(--purple);}
.btn-sm{font-size:13px; padding:8px 14px;}
.btn-lg{font-size:17px; padding:16px 28px;}
.btn-block{width:100%; justify-content:center;}
.btn-arrow{display:inline-block; transition:transform .15s ease;}
.btn:hover .btn-arrow{transform:translateX(3px);}

/* HERO */
.hero{
  position:relative; overflow:hidden;
  padding:6rem 0 7rem;
}
.hero-grid{
  display:grid; grid-template-columns: 1.4fr 1fr; gap:64px; align-items:center;
}
@media (max-width: 980px){
  .hero-grid{grid-template-columns:1fr; gap:48px;}
}
.hero-sub{font-size:clamp(17px, 1.4vw, 20px); color:var(--ink-soft); max-width:54ch; margin:1.5rem 0 2rem;}
.hero-ctas{display:flex; gap:12px; flex-wrap:wrap;}
.hero-meta{display:flex; gap:24px; margin-top:2.5rem; padding-top:1.5rem; border-top:1px solid var(--rule); flex-wrap:wrap;}
.hero-meta div{font-size:13px; color:var(--ink-soft);}
.hero-meta strong{color:var(--navy); font-family:var(--serif); font-size:24px; font-weight:500; display:block; line-height:1; margin-bottom:4px;}

/* THE PROBLEM */
.split-2{display:grid; grid-template-columns: 1fr 1.2fr; gap:80px; align-items:start;}
@media (max-width: 900px){ .split-2{grid-template-columns:1fr; gap:32px;} }
.lead{font-size:clamp(20px, 1.6vw, 24px); line-height:1.45; color:var(--ink); font-family:var(--serif); font-weight:400;}
.body-text{color:var(--ink-soft); font-size:17px;}

.bg-navy{background:var(--navy); color:#E8ECF4;}
.bg-navy h2, .bg-navy h3{color:#fff;}
.bg-navy .eyebrow{color:rgba(255,255,255,0.55);}

/* SECTION HEADER */
.section-head{display:flex; flex-direction:column; gap:14px; margin-bottom:56px; max-width:760px;}
.section-head.center{align-items:center; text-align:center; margin-left:auto; margin-right:auto;}

/* METHOD — oversized numerals (Phase 3) */
.method-flow{
  display:grid; grid-template-columns: repeat(3, 1fr); gap:56px; margin-top:64px;
}
@media (max-width: 800px){.method-flow{grid-template-columns:1fr; gap:48px;}}
.method-step{
  background:transparent; border:0; border-radius:0;
  padding:0; position:relative;
}
.method-step .num{
  font-family:var(--mono);
  font-size:clamp(64px, 6vw, 96px);
  font-weight:300;
  color:var(--purple);
  letter-spacing:-0.04em;
  line-height:1;
  margin-bottom:24px;
  display:block;
}
.method-step .num::after{content:none;}
.method-step h3{font-size:24px; margin-bottom:12px;}
.method-step p{color:var(--ink-soft); font-size:15px; margin:0; max-width:34ch;}
.method-step .glyph{display:none;}

/* DEMO */
.demo-card{
  position:relative; aspect-ratio:16/9; border-radius:18px; overflow:hidden;
  background:linear-gradient(135deg, #1B2D52 0%, #0F1E3D 60%, #0A1733 100%);
  cursor:pointer; box-shadow:0 24px 60px -24px rgba(15,30,61,0.45);
  transition:transform .25s ease;
}
.demo-card:hover{transform:translateY(-4px);}
.demo-card .deco{position:absolute; inset:0; opacity:0.22;}
.demo-card .play{
  position:absolute; left:50%; top:50%; transform:translate(-50%, -50%);
  width:96px; height:96px; border-radius:999px; background:var(--amber);
  display:grid; place-items:center; box-shadow:0 16px 40px rgba(245,158,11,0.45);
  transition:transform .15s ease;
}
.demo-card:hover .play{transform:translate(-50%,-50%) scale(1.06);}
.demo-card .play svg{margin-left:6px;}
.demo-caption{display:flex; justify-content:space-between; align-items:baseline; margin-top:18px; color:var(--ink-soft); font-size:14px;}
.demo-caption .mono{color:var(--navy);}

/* INSTRUCTOR */
.instructor-grid{display:grid; grid-template-columns: 38% 1fr; gap:80px; align-items:start;}
@media (max-width: 900px){.instructor-grid{grid-template-columns:1fr; gap:40px;}}
.portrait{
  aspect-ratio:4/5; border-radius:8px; position:relative;
  overflow:hidden !important;
  background:#F4F2EC;
  border:1px solid var(--rule);
  width:100%;
}
.portrait > img{
  position:absolute; inset:0;
  width:100% !important; height:100% !important;
  max-width:100% !important; max-height:100% !important;
  object-fit:cover !important; object-position:center 22% !important;
  display:block;
}
.portrait .label{
  position:absolute; left:16px; bottom:16px;
  font-family:var(--mono); font-size:11px; letter-spacing:0.04em; color:var(--ink-soft);
  background:var(--bg); padding:6px 10px; border:1px solid var(--rule); border-radius:6px;
}
.portrait .ring{
  width:62%; aspect-ratio:1/1; border-radius:999px;
  background: rgba(15,30,61,0.06);
  border:1px dashed rgba(15,30,61,0.25);
  display:grid; place-items:center;
}
.portrait .ring .inner{
  width:60%; aspect-ratio:1/1; border-radius:999px;
  background:linear-gradient(160deg, var(--bg-2), #DDD8C8);
}
.instructor-meta{margin-top:18px;}
.instructor-meta .name{font-family:var(--serif); font-size:22px; color:var(--navy); font-weight:500;}
.instructor-meta .role{font-size:14px; color:var(--ink-soft);}

.bio{font-size:17px; line-height:1.7; color:var(--ink); max-width:60ch;}
.bio p{margin-bottom:1.1em;}
.pullquote{
  border-left:3px solid var(--purple);
  padding:18px 0 18px 24px;
  margin:32px 0;
  font-family:var(--serif); font-size:clamp(22px, 2vw, 28px); line-height:1.25;
  color:var(--navy); font-weight:500; letter-spacing:-0.01em;
}

.badge{
  display:inline-flex; align-items:center; gap:6px;
  font-family:var(--mono); font-size:11px; letter-spacing:0.06em;
  padding:5px 9px; border-radius:999px; border:1px solid var(--rule); background:var(--bg);
  color:var(--ink-soft); font-weight:500; text-transform:uppercase;
  white-space:nowrap;
}
.badge-free{color:var(--purple-deep); border-color:rgba(109,91,208,0.25); background:var(--purple-soft);}
.badge-59{color:var(--navy); border-color:#C9D2E5; background:#EDF1F9;}
.badge-99{color:#fff; border-color:var(--navy); background:var(--navy);}

/* TESTIMONIALS */
.tcard-grid{display:grid; grid-template-columns: repeat(3, 1fr); gap:20px;}
@media (max-width: 900px){.tcard-grid{grid-template-columns:1fr;}}
.tcard{
  background:var(--bg); border:1px solid var(--rule); border-radius:14px;
  padding:28px;
  display:flex; flex-direction:column; gap:14px;
  transition:border-color .15s, transform .15s;
}
.tcard:hover{border-color:var(--navy); transform:translateY(-2px);}
.tcard .top{display:flex; justify-content:space-between; align-items:center;}
.tcard .who{font-family:var(--serif); font-size:18px; color:var(--navy); font-weight:500;}
.tcard .gain{font-family:var(--mono); font-size:13px; color:var(--purple-deep); padding:4px 8px; background:var(--purple-soft); border:1px solid rgba(109,91,208,0.3); border-radius:999px;}
.tcard .quote{font-family:var(--serif); font-size:18px; line-height:1.45; color:var(--ink); font-weight:400;}
.tcard .quote::before{content:"\201C"; color:var(--purple); font-size:32px; line-height:0; vertical-align:-12px; margin-right:2px;}
.tcard .stars{color:var(--purple); letter-spacing:2px; font-size:14px;}

/* PRICING */
.price-grid{display:grid; grid-template-columns: 1fr 1.06fr 1fr; gap:20px; align-items:stretch;}
@media (max-width: 900px){.price-grid{grid-template-columns:1fr;}}
.pcard{
  background:var(--bg); border:1px solid var(--rule); border-radius:16px;
  padding:36px 32px; display:flex; flex-direction:column; gap:20px;
  position:relative;
}
.pcard.pop{
  border:2px solid var(--purple); transform:scale(1.02);
  box-shadow:0 24px 60px -24px rgba(109,91,208,0.35);
  background:linear-gradient(180deg, #FAF8FF 0%, var(--bg) 30%);
}
@media (max-width: 900px){.pcard.pop{transform:none;}}
.pcard .ribbon{
  position:absolute; top:-13px; left:50%; transform:translateX(-50%);
  background:var(--purple); color:#fff;
  font-family:var(--mono); font-size:11px; letter-spacing:0.14em; text-transform:uppercase;
  padding:6px 14px; border-radius:999px; font-weight:600;
  white-space:nowrap;
}
.pcard .tier{font-family:var(--mono); font-size:11px; color:var(--ink-soft); letter-spacing:0.16em; text-transform:uppercase;}
.pcard .name{font-family:var(--serif); font-size:28px; color:var(--navy); font-weight:500; letter-spacing:-0.01em;}
.pcard .price{display:flex; align-items:baseline; gap:6px;}
.pcard .price .amt{font-family:var(--serif); font-size:56px; color:var(--navy); font-weight:500; line-height:1; letter-spacing:-0.025em;}
.pcard .price .per{color:var(--ink-soft); font-size:15px;}
.pcard .desc{color:var(--ink-soft); font-size:15px; min-height:42px;}
.pcard ul{list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:11px; flex:1;}
.pcard li{display:flex; gap:10px; align-items:flex-start; font-size:15px; color:var(--ink);}
.pcard li.no{color:var(--muted); text-decoration:line-through; text-decoration-color:rgba(156,163,175,0.4);}
.pcard li svg{flex-shrink:0; margin-top:3px;}

/* FAQ */
.faq{max-width:820px; margin:0 auto;}
.faq-item{border-bottom:1px solid var(--rule);}
.faq-item:first-child{border-top:1px solid var(--rule);}
.faq-q{
  width:100%; background:transparent; border:0; cursor:pointer;
  display:flex; justify-content:space-between; align-items:center; gap:24px;
  padding:24px 4px; text-align:left;
  font-family:var(--serif); font-size:20px; color:var(--navy); font-weight:500;
  letter-spacing:-0.01em;
}
.faq-q:hover{color:var(--purple-deep);}
.faq-q .plus{
  width:28px; height:28px; border-radius:999px; border:1px solid var(--rule);
  display:grid; place-items:center; flex-shrink:0;
  transition:transform .25s ease, background .15s, border-color .15s;
  color:var(--navy);
}
.faq-item.open .faq-q .plus{transform:rotate(45deg); background:var(--navy); color:#fff; border-color:var(--navy);}
.faq-a{
  max-height:0; overflow:hidden;
  transition:max-height .35s ease, padding .25s ease;
  color:var(--ink-soft); font-size:16px; line-height:1.6;
}
.faq-item.open .faq-a{max-height:240px; padding:0 4px 24px;}

/* FOOTER */
.final-cta{
  text-align:center; padding:7rem 0;
}
.final-cta h2{max-width:18ch; margin:0 auto 16px;}
.final-cta p{font-size:18px; max-width:50ch; margin:0 auto 28px; color:rgba(26,18,5,0.75);}

footer{background:var(--navy); color:rgba(232,236,244,0.7); padding:56px 0 32px;}
footer h4{font-family:var(--mono); font-size:11px; letter-spacing:0.16em; text-transform:uppercase; color:rgba(255,255,255,0.5); font-weight:500; margin-bottom:14px;}
.foot-grid{display:grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap:48px; padding-bottom:48px; border-bottom:1px solid rgba(255,255,255,0.1);}
@media (max-width:800px){.foot-grid{grid-template-columns:1fr 1fr; gap:32px;}}
.foot-grid a{display:block; padding:6px 0; font-size:14px;}
.foot-grid a:hover{color:#fff;}
.foot-bottom{display:flex; justify-content:space-between; align-items:center; padding-top:24px; font-size:13px; flex-wrap:wrap; gap:16px;}
footer .brand{color:#fff;}
footer .brand-mark{border-color:#fff; color:#fff; background:transparent;}

/* SOLUTION WALKTHROUGHS */
.walkthroughs{display:grid; grid-template-columns:1fr 1fr; gap:28px; margin-top:48px;}
@media (max-width:900px){.walkthroughs{grid-template-columns:1fr;}}
.walk-card{
  background:var(--bg); border:1px solid var(--rule); border-radius:14px; overflow:hidden;
  display:flex; flex-direction:column;
  transition:border-color .15s, transform .15s, box-shadow .15s;
  color:inherit; text-decoration:none;
}
.walk-card:hover{border-color:var(--navy); transform:translateY(-3px); box-shadow:0 18px 40px -22px rgba(15,30,61,0.35);}
.walk-vid{aspect-ratio:16/9; width:100%; background:#0F1E3D; position:relative; overflow:hidden;}
.walk-vid img{width:100%; height:100%; object-fit:cover; display:block; transition:transform .35s ease;}
.walk-card:hover .walk-vid img{transform:scale(1.04);}
.walk-play{
  position:absolute; left:50%; top:50%; transform:translate(-50%,-50%);
  width:72px; height:72px; border-radius:999px; background:var(--purple); color:#fff;
  display:grid; place-items:center; box-shadow:0 12px 30px rgba(109,91,208,0.45);
  transition:transform .15s ease;
}
.walk-card:hover .walk-play{transform:translate(-50%,-50%) scale(1.06);}
.walk-yt{
  position:absolute; right:12px; top:12px;
  display:flex; align-items:center; gap:6px;
  font-family:var(--mono); font-size:11px; letter-spacing:0.04em;
  color:#fff; background:rgba(0,0,0,0.55); backdrop-filter:blur(4px);
  padding:5px 10px; border-radius:999px;
}
.walk-meta{padding:22px 24px; display:flex; flex-direction:column; gap:8px;}
.walk-meta .kicker{font-family:var(--mono); font-size:11px; letter-spacing:0.14em; text-transform:uppercase; color:var(--purple-deep);}
.walk-meta h3{font-size:20px;}
.walk-meta p{margin:0; color:var(--ink-soft); font-size:14px;}

/* MODAL */
.modal-backdrop{
  position:fixed; inset:0; background:rgba(15,30,61,0.6); backdrop-filter:blur(6px); -webkit-backdrop-filter:blur(6px);
  z-index:100; display:grid; place-items:center; padding:24px;
  animation:fadeIn .2s ease;
}
.modal{
  width:min(960px, 100%); aspect-ratio:16/9; background:#000; border-radius:16px; overflow:hidden;
  position:relative; box-shadow:0 40px 100px rgba(0,0,0,0.5);
}
.modal-close{
  position:absolute; right:-2px; top:-44px;
  background:transparent; border:0; color:#fff; font-size:14px; font-family:var(--mono); cursor:pointer;
  display:flex; align-items:center; gap:8px;
}
@keyframes fadeIn{from{opacity:0} to{opacity:1}}

/* PRACTICE PAGE */
.kicker{
  font-family:var(--mono); font-size:11px; letter-spacing:0.16em; text-transform:uppercase;
  color:var(--purple-deep); display:inline-block; margin-bottom:10px;
}
.progress-card{
  background:var(--bg); border:1px solid var(--rule); border-radius:14px;
  padding:20px 24px; min-width:280px; max-width:320px;
}
.progress-stat{display:flex; flex-direction:column; gap:2px; margin-bottom:14px;}
.progress-num{font-family:var(--serif); font-size:42px; color:var(--navy); font-weight:500; line-height:1; letter-spacing:-0.02em;}
.progress-num .progress-denom{color:var(--muted); font-size:24px;}
.progress-label{font-family:var(--mono); font-size:11px; letter-spacing:0.12em; text-transform:uppercase; color:var(--ink-soft);}
.progress-bar{height:6px; background:var(--bg-2); border-radius:999px; overflow:hidden;}
.progress-fill{height:100%; background:var(--purple); border-radius:999px; transition:width .3s ease;}

.qlist{display:flex; flex-direction:column; gap:24px;}
.qcard{
  background:var(--bg); border:1px solid var(--rule); border-radius:16px;
  padding:32px; transition:border-color .15s, box-shadow .15s;
}
.qcard:hover{border-color:#D4CFC0;}
.qcard-review{border-color:var(--purple); box-shadow:0 18px 42px -28px rgba(109,91,208,0.4);}
.qcard-head{display:flex; justify-content:space-between; align-items:flex-start; gap:16px; margin-bottom:18px; flex-wrap:wrap;}
.qcard-num{font-family:var(--mono); font-size:11px; letter-spacing:0.16em; text-transform:uppercase; color:var(--ink-soft); display:block; margin-bottom:4px;}
.qcard-title{font-family:var(--serif); font-size:24px; color:var(--navy); font-weight:500; margin:0; letter-spacing:-0.01em;}
.qcard-verdict{font-family:var(--mono); font-size:11px; letter-spacing:0.1em; text-transform:uppercase; padding:6px 12px; border-radius:999px;}
.qcard-verdict.ok{color:#047857; background:#ECFDF5; border:1px solid #A7F3D0;}
.qcard-verdict.no{color:var(--purple-deep); background:var(--purple-soft); border:1px solid rgba(109,91,208,0.3);}

.qcard-idle{display:flex; flex-direction:column; gap:16px; align-items:flex-start;}
.qcard-preview{color:var(--ink-soft); font-size:15px; margin:0; max-width:60ch; font-style:italic; border-left:2px solid var(--rule); padding-left:14px;}

.qcard-body{display:flex; flex-direction:column; gap:24px;}
.qcard-passage{background:var(--bg-2); border-radius:12px; padding:22px 24px; border:1px solid var(--rule);}
.qcard-passage p{font-family:var(--serif); font-size:17px; line-height:1.65; color:var(--ink); margin:0 0 12px; font-weight:400;}
.qcard-passage p:last-child{margin-bottom:0;}
.passage-underline{
  text-decoration:underline;
  text-decoration-color:var(--purple);
  text-decoration-thickness:2px;
  text-underline-offset:4px;
  font-weight:500;
}

.qcard-question .prompt{font-family:var(--serif); font-size:20px; line-height:1.4; color:var(--navy); font-weight:500; margin:0 0 18px; letter-spacing:-0.005em;}
.choices{display:flex; flex-direction:column; gap:10px;}
.choice{
  display:flex; gap:14px; align-items:flex-start; text-align:left;
  background:var(--bg); border:1px solid var(--rule); border-radius:10px;
  padding:14px 16px; cursor:pointer; transition:border-color .12s, background .12s, transform .08s;
  font:inherit; color:var(--ink); font-size:15px; line-height:1.45;
}
.choice:hover:not(:disabled){border-color:var(--navy); background:#fff;}
.choice:disabled{cursor:default;}
.choice.chosen{border-color:var(--navy); background:#fff;}
.choice.right{border-color:#10B981; background:#ECFDF5;}
.choice.right .choice-key{background:#10B981; color:#fff; border-color:#10B981;}
.choice.wrong{border-color:#EF4444; background:#FEF2F2;}
.choice.wrong .choice-key{background:#EF4444; color:#fff; border-color:#EF4444;}
.choice-key{
  flex-shrink:0; width:28px; height:28px; border-radius:6px;
  border:1px solid var(--rule); display:grid; place-items:center;
  font-family:var(--mono); font-size:13px; font-weight:600; color:var(--navy);
  background:var(--bg-2);
}
.choice.chosen .choice-key{background:var(--navy); color:#fff; border-color:var(--navy);}
.choice-text{flex:1; padding-top:3px;}

.qcard-actions{display:flex; gap:10px; margin-top:20px; justify-content:flex-end; flex-wrap:wrap;}

.qcard-explain{
  background:#FAF8FF; border:1px solid rgba(109,91,208,0.3); border-radius:12px;
  padding:24px 26px; margin-top:8px;
}
.qcard-explain .kicker{color:var(--purple-deep);}
.qcard-explain p{font-size:16px; line-height:1.6; color:var(--ink);}
.badge-correct{
  display:inline-block; font-family:var(--mono); font-size:12px; letter-spacing:0.08em;
  background:var(--navy); color:#fff; padding:6px 12px; border-radius:999px; margin-bottom:14px; font-weight:500;
}
.method-block{margin-top:22px; padding-top:20px; border-top:1px dashed rgba(109,91,208,0.35);}
.method-steps{margin:8px 0 0 0; padding-left:22px; display:flex; flex-direction:column; gap:8px;}
.method-steps li{font-size:15px; line-height:1.55; color:var(--ink);}
.method-steps li::marker{color:var(--purple-deep); font-family:var(--mono); font-weight:600;}
.explain-actions{display:flex; gap:10px; margin-top:20px;}

/* Locked rail */
.locked-section{background:var(--bg-2); border-top:1px solid var(--rule); padding:5rem 0;}
.locked-head{display:flex; justify-content:space-between; align-items:flex-end; gap:24px; margin-bottom:32px; flex-wrap:wrap;}
.locked-grid{
  display:grid; grid-template-columns:repeat(auto-fill, minmax(72px, 1fr)); gap:8px;
}
.locked-tile{
  aspect-ratio:1/1; background:var(--bg); border:1px solid var(--rule); border-radius:8px;
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:6px;
  color:var(--muted); transition:border-color .12s, color .12s;
  position:relative; overflow:hidden;
}
.locked-tile::before{
  content:""; position:absolute; inset:0;
  background:repeating-linear-gradient(135deg, transparent 0 4px, rgba(15,30,61,0.025) 4px 8px);
}
.locked-tile:hover{border-color:var(--navy); color:var(--navy);}
.locked-num{font-family:var(--mono); font-size:11px; letter-spacing:0.06em; position:relative;}
.locked-icon{position:relative;}

@media (max-width:700px){
  .qcard{padding:24px 20px;}
  .progress-card{width:100%; max-width:none;}
}

/* Utility */
.center{text-align:center}
.muted{color:var(--ink-soft)}
.flex{display:flex}
.gap-3{gap:12px}
.mt-1{margin-top:8px}
.mt-2{margin-top:16px}
.mt-4{margin-top:32px}

/* =========================================================
   TOPICS — slim CTA on the home page
   ========================================================= */
.topics-cta{
  display:grid; grid-template-columns: 1.05fr 1fr; gap:80px; align-items:center;
}
.topics-cta__copy{max-width:46ch;}
.topics-cta__h{
  font-size:clamp(34px, 3.6vw, 52px); line-height:1.05; letter-spacing:-0.015em;
  color:var(--navy); margin:14px 0 0;
}
.topics-cta__h em{font-style:italic; color:var(--purple); font-weight:500;}
.topics-cta__p{margin-top:18px;}
.topics-cta__btns{display:flex; gap:12px; margin-top:30px; flex-wrap:wrap;}
.topics-cta__list{
  display:flex; flex-direction:column;
  background:var(--bg); border:1px solid var(--rule); border-radius:14px;
  padding:8px 4px;
  box-shadow:0 1px 0 rgba(15,30,61,0.02), 0 24px 60px -38px rgba(15,30,61,0.18);
}
.topics-cta__row{
  display:grid; grid-template-columns: 44px 1fr auto; align-items:center; gap:14px;
  padding:13px 18px; border-bottom:1px solid var(--rule);
}
.topics-cta__row:last-child{border-bottom:none;}
.topics-cta__num{font-family:var(--mono); color:var(--muted); font-size:13px; letter-spacing:0.06em;}
.topics-cta__name{font-family:var(--serif); color:var(--navy); font-size:18px; font-weight:500; letter-spacing:-0.005em;}
.topics-cta__badge{justify-self:end;}

@media (max-width: 980px){
  .topics-cta{grid-template-columns:1fr; gap:48px;}
  .topics-cta__list{order:2;}
  .topics-cta__row{padding:11px 14px;}
  .topics-cta__name{font-size:17px;}
}

/* =========================================================
   TOPICS PAGE — dedicated curriculum index
   ========================================================= */

/* Featured topic — the free, practiceable one (Phase 7: light) */
.topic-feature{
  position:relative;
  display:grid; grid-template-columns: 1.25fr 1fr; gap:0;
  background:#fff; color:var(--ink);
  border-radius:18px; overflow:hidden;
  text-decoration:none;
  border:1px solid var(--rule);
  transition:transform .2s ease, box-shadow .2s ease;
  box-shadow:0 1px 0 rgba(109,91,208,0.04), 0 30px 70px -42px rgba(109,91,208,0.35);
}
.topic-feature:hover{transform:translateY(-2px); box-shadow:0 1px 0 rgba(109,91,208,0.06), 0 36px 80px -38px rgba(109,91,208,0.45);}
.topic-feature__left{padding:48px 52px 44px; position:relative; z-index:1;}
.topic-feature__head{display:flex; align-items:center; gap:14px; margin-bottom:22px;}
.topic-feature__num{
  font-family:var(--mono);
  font-size:clamp(28px, 2.4vw, 36px);
  font-weight:300;
  color:var(--purple-deep);
  letter-spacing:-0.02em;
  line-height:1;
}
.topic-feature__tag{
  font-family:var(--mono); font-size:11px; letter-spacing:0.08em; text-transform:uppercase;
  color:#fff; background:var(--purple);
  padding:4px 10px; border-radius:4px;
  white-space:nowrap; flex-shrink:0;
}
.topic-feature__name{
  font-family:var(--serif); color:var(--navy);
  font-size:clamp(34px, 3.4vw, 48px); line-height:1.05; letter-spacing:-0.015em;
  margin:0 0 16px;
}
.topic-feature__desc{
  color:var(--ink-soft); font-size:18px; line-height:1.55; margin:0;
  max-width:46ch;
}
.topic-feature__cta{display:flex; align-items:center; gap:20px; margin-top:32px; flex-wrap:wrap;}
.topic-feature__cta .btn{pointer-events:none;}
.topic-feature__meta{font-family:var(--mono); font-size:12px; letter-spacing:0.06em; color:var(--ink-soft);}

.topic-feature__right{
  position:relative; overflow:hidden;
  background:var(--bg-2);
  border-left:1px solid var(--rule);
  padding:48px 44px;
  display:flex; align-items:center; justify-content:center;
}
.topic-feature__right::before{
  content:""; position:absolute; pointer-events:none;
  width:380px; height:380px; border-radius:50%;
  top:-100px; right:-80px;
  background:radial-gradient(circle, rgba(109,91,208,0.22) 0%, rgba(109,91,208,0) 70%);
  filter:blur(50px);
}
.topic-feature__diagram{
  position:relative; z-index:1;
  display:flex; flex-direction:column; gap:14px; width:100%; max-width:340px;
  font-family:var(--mono); font-size:13px; letter-spacing:0.06em; text-transform:uppercase;
}
.topic-feature__diagram .diag-row{
  padding:18px 22px; border-radius:8px;
  border:1px solid var(--rule);
  background:#fff;
  color:var(--navy);
  position:relative;
  display:flex; align-items:center;
}
.topic-feature__diagram .diag-row::before{
  content:""; width:8px; height:8px; border-radius:50%;
  background:var(--purple); margin-right:14px; flex-shrink:0;
}
.topic-feature__diagram .diag-row--1{margin-left:0;}
.topic-feature__diagram .diag-row--2{margin-left:18px;}
.topic-feature__diagram .diag-row--3{margin-left:36px;}
.topic-feature__diagram .diag-row--4{margin-left:54px;}

@media (max-width: 900px){
  .topic-feature{grid-template-columns:1fr;}
  .topic-feature__left{padding:36px 28px 30px;}
  .topic-feature__right{display:none;}
}

/* Divider between featured + the rest */
.topics-divider{
  display:flex; align-items:center; gap:18px;
  margin:64px 0 32px;
  font-family:var(--mono); font-size:11px; letter-spacing:0.08em; text-transform:uppercase;
  color:var(--muted);
}
.topics-divider__line{flex:1; height:1px; background:var(--rule);}
.topics-divider__label{white-space:nowrap;}

/* Topic grid (locked topics 02–08) */
.topic-grid{
  display:grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap:20px;
}
.topic-card{
  display:flex; flex-direction:column;
  background:var(--bg); border:1px solid var(--rule); border-radius:14px;
  padding:28px 26px 24px; min-height:240px;
  text-decoration:none; color:inherit;
  transition:transform .15s ease, border-color .15s ease, box-shadow .15s ease;
  position:relative;
}
.topic-card:hover{
  transform:translateY(-2px);
  border-color:var(--purple);
  box-shadow:0 18px 40px -28px rgba(109,91,208,0.35);
}
.topic-card__head{display:flex; justify-content:space-between; align-items:center; margin-bottom:18px;}
.topic-card__num{font-family:var(--mono); color:var(--muted); font-size:13px; letter-spacing:0.08em;}
.topic-card__name{
  font-family:var(--serif); color:var(--navy); margin:0 0 8px;
  font-size:24px; line-height:1.15; font-weight:500; letter-spacing:-0.01em;
}
.topic-card__desc{color:var(--ink); font-size:15px; line-height:1.5; margin:0 0 10px;}
.topic-card__long{color:var(--ink-soft); font-size:14px; line-height:1.55; margin:0;}
.topic-card__foot{margin-top:auto; padding-top:22px;}
.topic-card__cta{
  display:inline-flex; align-items:center; gap:6px;
  font-family:var(--mono); font-size:12px; letter-spacing:0.06em; text-transform:uppercase;
  color:var(--ink-soft);
  transition:color .12s, gap .12s;
}
.topic-card:hover .topic-card__cta{color:var(--purple-deep); gap:10px;}

.topic-card--free{border-color:var(--navy); background:#fff;}

/* =========================================================
   PHASE 2 — HERO REBUILD (modern SaaS, Acely-inspired)
   ========================================================= */

/* Soft purple gradient depth behind hero */
.hero{ position:relative; }
.hero-bg{
  position:absolute; inset:0; pointer-events:none; overflow:hidden; z-index:0;
}
.hero-blob{
  position:absolute; border-radius:50%; filter:blur(80px); opacity:0.6;
}
.hero-blob--1{
  width:580px; height:580px;
  top:-180px; right:-140px;
  background:radial-gradient(circle, rgba(109,91,208,0.38) 0%, rgba(109,91,208,0) 70%);
}
.hero-blob--2{
  width:440px; height:440px;
  bottom:-160px; left:-180px;
  background:radial-gradient(circle, rgba(79,61,190,0.28) 0%, rgba(79,61,190,0) 70%);
}
.hero .wrap{ position:relative; z-index:1; }

/* H1 keyword highlight — replaces the old serif italic <em> */
.hl{ color:var(--purple); font-weight:700; }

/* Quieter secondary CTA (replaces .btn-outline in hero) */
.btn-link{
  display:inline-flex; align-items:center; gap:8px;
  background:transparent; border:0; cursor:pointer;
  font-family:var(--sans); font-size:15px; font-weight:600;
  color:var(--navy); padding:12px 4px;
  transition:color .15s, gap .15s;
}
.btn-link:hover{ color:var(--purple); gap:12px; }
.btn-link .btn-arrow{ display:inline-block; transition:transform .15s ease; }
.btn-link:hover .btn-arrow{ transform:translateX(3px); }

/* Product preview card */
.hero-shot{
  position:relative; max-width:520px; width:100%; margin-left:auto;
}
.hero-mock{
  background:#fff;
  border:1px solid var(--rule); border-radius:18px;
  padding:24px;
  display:flex; flex-direction:column; gap:18px;
  box-shadow:
    0 1px 0 rgba(15,30,61,0.04),
    0 30px 80px -30px rgba(79,61,190,0.35),
    0 14px 30px -16px rgba(15,30,61,0.18);
  transition:transform .25s ease, box-shadow .25s ease;
}
.hero-mock:hover{
  transform:translateY(-4px);
  box-shadow:
    0 1px 0 rgba(15,30,61,0.04),
    0 38px 90px -30px rgba(79,61,190,0.45),
    0 18px 40px -16px rgba(15,30,61,0.22);
}
.hero-mock__head{display:flex; justify-content:space-between; align-items:center; gap:10px;}
.hero-mock__pill{
  font-family:var(--mono); font-size:11px; letter-spacing:0.08em;
  color:var(--ink-soft); background:var(--bg-2);
  border:1px solid var(--rule); padding:5px 10px; border-radius:6px;
}
.hero-mock__badge{
  font-family:var(--mono); font-size:10px; letter-spacing:0.1em;
  color:var(--purple-deep); background:var(--purple-soft);
  border:1px solid rgba(109,91,208,0.25);
  padding:4px 8px; border-radius:4px; font-weight:600;
}
.hero-mock__passage{
  background:var(--bg-2); border:1px solid var(--rule); border-radius:10px;
  padding:14px 16px;
}
.hero-mock__passage p{margin:0; font-size:13px; line-height:1.55; color:var(--ink-soft);}
.hero-mock__hl{
  background:linear-gradient(180deg, transparent 60%, rgba(109,91,208,0.22) 60%);
  color:var(--ink); font-weight:500;
}
.hero-mock__prompt{font-size:14px; font-weight:600; color:var(--navy); line-height:1.4;}
.hero-mock__choices{display:flex; flex-direction:column; gap:6px;}
.hero-mock__choice{
  display:flex; align-items:center; gap:10px;
  padding:9px 12px;
  background:#fff; border:1px solid var(--rule); border-radius:8px;
  font-size:13px; color:var(--ink);
}
.hero-mock__choice--right{
  background:var(--purple-soft); border-color:rgba(109,91,208,0.4);
  color:var(--purple-deep); font-weight:500;
}
.hero-mock__key{
  flex-shrink:0; width:22px; height:22px; border-radius:5px;
  display:grid; place-items:center;
  font-family:var(--mono); font-size:11px; font-weight:600;
  background:var(--bg-2); color:var(--ink-soft); border:1px solid var(--rule);
}
.hero-mock__choice--right .hero-mock__key{
  background:var(--purple); color:#fff; border-color:var(--purple);
}
.hero-mock__check{margin-left:auto; color:var(--purple);}
@media (max-width: 980px){
  .hero-shot{max-width:none; margin:0 auto;}
}

/* =========================================================
   PHASE 5 — bg-anchor (Final CTA bookend, mirrors hero)
   ========================================================= */
.bg-anchor{
  position:relative;
  background:#fff;
  overflow:hidden;
}
.bg-anchor::before, .bg-anchor::after{
  content:""; position:absolute; pointer-events:none;
  border-radius:50%; filter:blur(80px);
}
.bg-anchor::before{
  width:600px; height:600px;
  top:-220px; right:-160px;
  background:radial-gradient(circle, rgba(109,91,208,0.34) 0%, rgba(109,91,208,0) 70%);
}
.bg-anchor::after{
  width:480px; height:480px;
  bottom:-200px; left:-140px;
  background:radial-gradient(circle, rgba(79,61,190,0.24) 0%, rgba(79,61,190,0) 70%);
}
.bg-anchor .wrap{position:relative; z-index:1;}
.bg-anchor.final-cta p{color:var(--ink-soft);}