/* Medinaz Mastery · Student site — marketing landing, catalog, auth
   Shares brand tokens with admin.css; adds a dark hero palette for the
   interactive boosterprep-style landing. No build step. */
:root{
  --teal:#0c9c92; --teal-dark:#0a8079; --teal-light:#28c2b6; --teal-soft:#e6f5f4;
  --violet:#7E57C2; --violet-light:#a883e6; --violet-soft:#f1ecfa;
  --navy:#16294a; --navy-2:#0f2038; --ink:#243140; --muted:#6b7a90;
  --line:#e7ecf3; --bg:#f6f8fb; --white:#fff;
  --amber:#f0a020; --amber-soft:#fdf3e0; --green:#28a96b; --green-soft:#e7f6ef;
  --blue:#3f7cf0; --blue-soft:#edf3fe;
  /* dark hero surfaces */
  --d-0:#070d18; --d-1:#0a1220; --d-2:#111c30; --d-line:rgba(255,255,255,.10);
  --d-text:#e8eef7; --d-muted:#93a3ba;
  --radius:16px; --shadow:0 18px 50px -20px rgba(16,32,60,.28);
  --maxw:1160px;
}
*{box-sizing:border-box;margin:0}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{font-family:'Plus Jakarta Sans',sans-serif;color:var(--ink);background:var(--white);
  line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.mono{font-family:'JetBrains Mono',monospace}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px;width:100%}
section{position:relative}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:700;font-size:15px;padding:13px 24px;border-radius:12px;border:1.5px solid transparent;
  cursor:pointer;transition:transform .15s,box-shadow .15s,background .15s,color .15s;white-space:nowrap}
.btn:active{transform:translateY(1px)}
.btn-primary{background:linear-gradient(120deg,var(--teal),var(--teal-dark));color:#fff;
  box-shadow:0 10px 24px -8px rgba(12,156,146,.6)}
.btn-primary:hover{box-shadow:0 14px 30px -8px rgba(12,156,146,.75);transform:translateY(-2px)}
.btn-ghost{background:rgba(255,255,255,.06);color:#fff;border-color:rgba(255,255,255,.18)}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
.btn-light{background:#fff;color:var(--navy);border-color:var(--line)}
.btn-light:hover{border-color:var(--teal);color:var(--teal-dark)}
.btn-lg{padding:16px 30px;font-size:16px}
.btn-block{width:100%}

/* ---------- nav ---------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:50;transition:.25s}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:70px}
.nav.scrolled{background:rgba(9,15,26,.82);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--d-line)}
.nav-logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;color:#fff;letter-spacing:-.3px}
.nav-logo img{height:30px;width:auto}
.nav-logo .dot{color:var(--teal-light)}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a.lnk{color:var(--d-muted);font-weight:600;font-size:14.5px;transition:.15s}
.nav-links a.lnk:hover{color:#fff}
.nav-cta{display:flex;align-items:center;gap:14px}
.nav-cta .login{color:#fff;font-weight:700;font-size:14.5px}
.nav-burger{display:none;background:none;border:none;color:#fff;font-size:26px;line-height:1}
.mobile-menu{display:none;flex-direction:column;gap:4px;padding:14px 24px 22px;
  background:var(--d-1);border-bottom:1px solid var(--d-line)}
.mobile-menu a{color:var(--d-text);font-weight:600;padding:11px 0;border-bottom:1px solid var(--d-line)}
.mobile-menu .btn{margin-top:12px;padding:14px 0;border-bottom:none}
.mobile-menu a.btn-light{color:var(--navy)}     /* white button — keep dark text */
.mobile-menu a.btn-primary{color:#fff}
@media(max-width:900px){
  .nav-links,.nav-cta{display:none}   /* CTAs live in the burger menu on mobile */
  .nav-burger{display:block}
  .nav.open .mobile-menu{display:flex}
  .nav.open{background:var(--d-1)}
}

/* ---------- hero ---------- */
.hero{background:radial-gradient(1200px 700px at 70% -10%,rgba(126,87,194,.28),transparent 60%),
  radial-gradient(900px 600px at 10% 10%,rgba(12,156,146,.22),transparent 55%),
  linear-gradient(180deg,var(--d-0),var(--d-1) 60%,var(--d-2));
  color:var(--d-text);padding:140px 0 90px;overflow:hidden}
.stars{position:absolute;inset:0;pointer-events:none;opacity:.6;
  background-image:radial-gradient(1px 1px at 20% 30%,#fff,transparent),
  radial-gradient(1px 1px at 60% 20%,#fff,transparent),
  radial-gradient(1px 1px at 80% 60%,#fff,transparent),
  radial-gradient(1.5px 1.5px at 40% 80%,#fff,transparent),
  radial-gradient(1px 1px at 90% 40%,#fff,transparent),
  radial-gradient(1px 1px at 30% 65%,#fff,transparent);
  background-size:cover}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;position:relative}
.badges{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:22px}
.badge{display:inline-flex;align-items:center;gap:7px;font-size:12.5px;font-weight:700;
  padding:7px 13px;border-radius:999px;background:rgba(255,255,255,.07);border:1px solid var(--d-line);
  color:var(--d-text);letter-spacing:.2px}
.badge .b-dot{width:7px;height:7px;border-radius:50%;background:var(--teal-light);box-shadow:0 0 10px var(--teal-light)}
.badge.amber{color:#ffd58a}
h1.hero-title{font-size:clamp(34px,5.2vw,58px);line-height:1.05;font-weight:800;letter-spacing:-1.2px;color:#fff}
.hero-title .grad{background:linear-gradient(120deg,var(--teal-light),var(--violet-light));
  -webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:clamp(16px,2vw,19px);color:var(--d-muted);margin:22px 0 30px;max-width:520px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-mini{display:flex;gap:22px;margin-top:30px;flex-wrap:wrap}
.hero-mini .m{display:flex;flex-direction:column}
.hero-mini .m b{font-size:22px;font-weight:800;color:#fff}
.hero-mini .m span{font-size:12.5px;color:var(--d-muted);font-weight:600}
/* floating product card */
.hero-art{position:relative}
.float-card{position:relative;z-index:1;background:linear-gradient(160deg,rgba(255,255,255,.09),rgba(255,255,255,.03));
  border:1px solid var(--d-line);border-radius:22px;padding:20px;backdrop-filter:blur(8px);
  box-shadow:0 40px 80px -30px rgba(0,0,0,.7);animation:floaty 6s ease-in-out infinite}
@media (prefers-reduced-motion:reduce){.float-card{animation:none}}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}
.float-card .fc-head{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.fc-swatch{width:38px;height:38px;border-radius:10px;flex-shrink:0}
.fc-head b{color:#fff;font-size:15px;font-weight:800;line-height:1.2}
.fc-head span{color:var(--d-muted);font-size:12px}
.fc-row{display:flex;align-items:center;gap:10px;padding:11px 12px;border-radius:12px;
  background:rgba(255,255,255,.05);border:1px solid var(--d-line);margin-bottom:9px;color:var(--d-text);font-size:13.5px;font-weight:600}
.fc-row .ic{width:26px;height:26px;border-radius:8px;display:grid;place-items:center;flex-shrink:0;font-size:14px}
.fc-badge{margin-left:auto;font-size:11px;font-weight:700;color:var(--teal-light)}
.chip-float{position:absolute;z-index:3;background:#fff;color:var(--navy);font-weight:800;font-size:13px;
  padding:9px 14px;border-radius:12px;box-shadow:var(--shadow);display:flex;align-items:center;gap:7px}
.chip-float.a{top:-14px;right:24px;animation:floaty 5s ease-in-out infinite}
.chip-float.b{bottom:-16px;left:-10px;animation:floaty 7s ease-in-out .5s infinite}
.chip-float .k{color:var(--teal-dark)}
@media(max-width:860px){.hero-grid{grid-template-columns:1fr;gap:40px}.hero-art{display:none}}

/* ---------- logos / proof strip ---------- */
.proof{background:var(--d-2);color:var(--d-muted);padding:26px 0;border-top:1px solid var(--d-line)}
.proof p{text-align:center;font-size:12.5px;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;margin-bottom:16px;color:var(--d-muted)}
.proof-stats{display:flex;justify-content:center;gap:52px;flex-wrap:wrap}
.proof-stats .s{text-align:center}
.proof-stats .s b{display:block;font-size:30px;font-weight:800;color:#fff;font-family:'JetBrains Mono',monospace}
.proof-stats .s span{font-size:12.5px;font-weight:600}

/* ---------- generic light section ---------- */
.sec{padding:88px 0}
.sec.tint{background:var(--bg)}
.sec-head{text-align:center;max-width:640px;margin:0 auto 52px}
.eyebrow{display:inline-block;font-size:12.5px;font-weight:800;letter-spacing:1.4px;text-transform:uppercase;
  color:var(--teal-dark);background:var(--teal-soft);padding:6px 13px;border-radius:999px;margin-bottom:16px}
.eyebrow.violet{color:var(--violet);background:var(--violet-soft)}
h2.sec-title{font-size:clamp(26px,3.6vw,40px);font-weight:800;letter-spacing:-.8px;color:var(--navy);line-height:1.12}
.sec-desc{font-size:16.5px;color:var(--muted);margin-top:14px}

/* ---------- feature rows ---------- */
.feature{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;margin-bottom:80px}
.feature:last-child{margin-bottom:0}
.feature.flip .f-media{order:2}
.f-text h3{font-size:clamp(22px,2.6vw,30px);font-weight:800;color:var(--navy);letter-spacing:-.5px;margin-bottom:14px}
.f-text p{font-size:16px;color:var(--muted);margin-bottom:20px}
.f-list{list-style:none;display:flex;flex-direction:column;gap:12px}
.f-list li{display:flex;gap:11px;font-size:15px;font-weight:600;color:var(--ink)}
.f-list li .tick{width:22px;height:22px;border-radius:7px;background:var(--teal-soft);color:var(--teal-dark);
  display:grid;place-items:center;font-size:12px;flex-shrink:0;font-weight:800}
.f-media{border-radius:20px;padding:30px;min-height:300px;position:relative;overflow:hidden;
  background:linear-gradient(160deg,var(--navy),var(--navy-2));color:#fff;box-shadow:var(--shadow);
  display:flex;flex-direction:column;justify-content:center}
.f-media.teal{background:linear-gradient(160deg,#0d5b56,#0a8079)}
.f-media.violet{background:linear-gradient(160deg,#4a3184,#7E57C2)}
.f-media.amber{background:linear-gradient(160deg,#8a5a12,#d98a1f)}
/* mini mock elements reused inside media */
.mock-card{background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.16);border-radius:12px;
  padding:14px;margin-bottom:10px;backdrop-filter:blur(4px)}
.mock-card:last-child{margin-bottom:0}
.mock-label{font-size:11px;font-weight:800;letter-spacing:1px;text-transform:uppercase;opacity:.7;margin-bottom:7px}
.mock-line{height:9px;border-radius:5px;background:rgba(255,255,255,.22);margin-bottom:7px}
.mock-line.w70{width:70%}.mock-line.w50{width:50%}.mock-line.w90{width:90%}
.mock-opt{display:flex;align-items:center;gap:9px;font-size:13px;font-weight:600;padding:9px 11px;border-radius:9px;
  background:rgba(255,255,255,.08);margin-bottom:7px}
.mock-opt.correct{background:rgba(40,169,107,.28);border:1px solid rgba(80,220,150,.5)}
.mock-opt .kk{width:22px;height:22px;border-radius:6px;background:rgba(255,255,255,.18);display:grid;place-items:center;font-weight:800;font-size:12px}
@media(max-width:820px){.feature{grid-template-columns:1fr;gap:30px;margin-bottom:56px}
  .feature.flip .f-media{order:0}}

/* ---------- how it works ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;text-align:center;box-shadow:var(--shadow)}
.step .n{width:46px;height:46px;margin:0 auto 16px;border-radius:14px;display:grid;place-items:center;
  font-weight:800;font-size:19px;color:#fff;background:linear-gradient(135deg,var(--teal),var(--violet))}
.step h4{font-size:18px;font-weight:800;color:var(--navy);margin-bottom:8px}
.step p{font-size:14.5px;color:var(--muted)}
@media(max-width:760px){.steps{grid-template-columns:1fr}}

/* ---------- comparison ---------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:20px;max-width:860px;margin:0 auto}
.comp-col{border-radius:var(--radius);padding:28px;border:1px solid var(--line)}
.comp-col.old{background:#fff}
.comp-col.new{background:linear-gradient(160deg,#0d5b56,#0a8079);color:#fff;border:none;box-shadow:var(--shadow)}
.comp-col h4{font-size:16px;font-weight:800;margin-bottom:18px;display:flex;align-items:center;gap:9px}
.comp-col.old h4{color:var(--muted)}
.comp-col ul{list-style:none;display:flex;flex-direction:column;gap:14px}
.comp-col li{display:flex;gap:11px;font-size:14.5px;font-weight:600;line-height:1.4}
.comp-col.old li{color:var(--muted)}
.comp-col li .m{flex-shrink:0;font-weight:800}
.comp-col.old li .m{color:var(--red)}
.comp-col.new li .m{color:#7ff0d8}
@media(max-width:700px){.compare{grid-template-columns:1fr}}

/* ---------- book catalog ---------- */
.books{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media(max-width:900px){.books{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.books{grid-template-columns:1fr}}
.book-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  display:flex;flex-direction:column;transition:transform .18s,box-shadow .18s}
.book-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.book-cover{height:170px;position:relative;display:flex;align-items:flex-end;padding:16px;color:#fff}
.book-cover .exam{position:absolute;top:14px;left:14px;font-size:11px;font-weight:800;letter-spacing:.6px;
  background:rgba(0,0,0,.28);padding:5px 10px;border-radius:999px;backdrop-filter:blur(3px)}
.book-cover .rate{position:absolute;top:14px;right:14px;font-size:12px;font-weight:800;
  background:rgba(255,255,255,.9);color:var(--navy);padding:5px 9px;border-radius:999px}
.book-cover h3{font-size:19px;font-weight:800;line-height:1.15;text-shadow:0 2px 12px rgba(0,0,0,.35)}
.book-body{padding:18px;display:flex;flex-direction:column;gap:12px;flex:1}
.book-body p{font-size:13.5px;color:var(--muted);flex:1}
.book-meta{display:flex;gap:16px;font-size:12px;font-weight:700;color:var(--ink)}
.book-meta span{display:flex;align-items:center;gap:5px}
.book-price{display:flex;align-items:baseline;gap:8px;font-weight:800}
.book-price .sale{font-size:20px;color:var(--navy)}
.book-price .list{font-size:13px;color:var(--muted);text-decoration:line-through;font-weight:600}
.book-price .from{font-size:12px;color:var(--muted);font-weight:600}

/* ---------- pricing ---------- */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;max-width:960px;margin:0 auto;align-items:stretch}
@media(max-width:820px){.plans{grid-template-columns:1fr;max-width:420px}}
.plan{background:#fff;border:1.5px solid var(--line);border-radius:var(--radius);padding:28px 24px;
  display:flex;flex-direction:column;position:relative;transition:transform .18s,box-shadow .18s}
.plan:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.plan.best{border-color:var(--teal);box-shadow:0 18px 44px -20px rgba(12,156,146,.5)}
.plan .tag{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:linear-gradient(120deg,var(--teal),var(--teal-dark));
  color:#fff;font-size:11.5px;font-weight:800;letter-spacing:.5px;padding:6px 14px;border-radius:999px;white-space:nowrap}
.plan .dur{font-size:15px;font-weight:800;color:var(--navy)}
.plan .tagline{font-size:12.5px;color:var(--muted);margin-bottom:16px;min-height:18px}
.plan .price{display:flex;align-items:baseline;gap:9px;margin-bottom:4px}
.plan .price .amt{font-size:34px;font-weight:800;color:var(--navy)}
.plan .price .was{font-size:15px;color:var(--muted);text-decoration:line-through;font-weight:600}
.plan .perday{font-size:12.5px;color:var(--teal-dark);font-weight:700;margin-bottom:20px}
.plan .btn{margin-top:auto}

/* ---------- testimonials ---------- */
.tst-track{display:flex;gap:22px;overflow-x:auto;scroll-snap-type:x mandatory;padding:6px 2px 18px;-webkit-overflow-scrolling:touch}
.tst-track::-webkit-scrollbar{height:7px}
.tst-track::-webkit-scrollbar-thumb{background:var(--line);border-radius:99px}
.tst{scroll-snap-align:start;flex:0 0 min(420px,86%);background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}
.tst .stars{position:static;opacity:1;background:none;color:var(--amber);font-size:15px;letter-spacing:2px;margin-bottom:14px}
.tst blockquote{font-size:15.5px;font-weight:600;color:var(--ink);line-height:1.6;margin-bottom:18px}
.tst .who{display:flex;align-items:center;gap:12px}
.tst .who .av{width:42px;height:42px;border-radius:50%;background:linear-gradient(135deg,var(--teal),var(--violet));
  color:#fff;display:grid;place-items:center;font-weight:800}
.tst .who b{display:block;font-size:14px;color:var(--navy)}
.tst .who span{font-size:12.5px;color:var(--green);font-weight:700}

/* ---------- FAQ ---------- */
.faq{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.faq-q{width:100%;text-align:left;background:none;border:none;padding:19px 22px;font-size:15.5px;
  font-weight:700;color:var(--navy);display:flex;justify-content:space-between;align-items:center;gap:16px;cursor:pointer;font-family:inherit}
.faq-q .pl{transition:.2s;color:var(--teal-dark);font-size:20px;flex-shrink:0}
.faq-a{padding:0 22px;font-size:14.5px;color:var(--muted);line-height:1.6}
.faq-a p{padding-bottom:19px}

/* ---------- CTA band + footer ---------- */
.cta-band{background:radial-gradient(800px 400px at 80% 0%,rgba(126,87,194,.4),transparent 60%),
  linear-gradient(120deg,var(--teal-dark),var(--navy));color:#fff;border-radius:24px;
  padding:56px;text-align:center;position:relative;overflow:hidden}
.cta-band h2{font-size:clamp(26px,3.4vw,38px);font-weight:800;letter-spacing:-.6px;margin-bottom:14px}
.cta-band p{font-size:16.5px;color:rgba(255,255,255,.82);max-width:520px;margin:0 auto 26px}
.footer{background:var(--d-1);color:var(--d-muted);padding:56px 0 30px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding-bottom:36px;border-bottom:1px solid var(--d-line)}
.footer-brand .nav-logo{margin-bottom:14px}
.footer-brand p{font-size:13.5px;max-width:280px}
.footer col,.footer-col h5{color:#fff;font-size:13px;font-weight:800;letter-spacing:.6px;margin-bottom:14px;text-transform:uppercase}
.footer-col a{display:block;font-size:14px;padding:6px 0;color:var(--d-muted);transition:.15s}
.footer-col a:hover{color:#fff}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding-top:22px;font-size:13px;flex-wrap:wrap;gap:10px}
@media(max-width:760px){.footer-grid{grid-template-columns:1fr 1fr}.cta-band{padding:40px 24px}}

/* ---------- scroll reveal ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

/* ---------- auth pages ---------- */
.auth-wrap{min-height:100vh;display:grid;grid-template-columns:1.05fr .95fr}
.auth-brand{background:radial-gradient(900px 600px at 30% 20%,rgba(126,87,194,.35),transparent 55%),
  linear-gradient(160deg,var(--d-0),var(--d-2));color:var(--d-text);padding:56px;display:flex;flex-direction:column;justify-content:space-between}
.auth-brand .nav-logo{font-size:22px}
.auth-brand h2{font-size:34px;font-weight:800;letter-spacing:-.8px;color:#fff;line-height:1.15;margin-top:auto}
.auth-brand p{font-size:16px;color:var(--d-muted);margin-top:16px;max-width:400px}
.auth-brand .a-list{list-style:none;margin-top:26px;display:flex;flex-direction:column;gap:12px}
.auth-brand .a-list li{display:flex;gap:10px;font-weight:600;font-size:14.5px}
.auth-brand .a-list .tick{color:var(--teal-light);font-weight:800}
.auth-form-side{display:flex;align-items:center;justify-content:center;padding:40px 24px;background:var(--white)}
.auth-card{width:100%;max-width:420px}
.auth-card h1{font-size:27px;font-weight:800;color:var(--navy);letter-spacing:-.5px}
.auth-card .lede{font-size:14.5px;color:var(--muted);margin:8px 0 26px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:700;color:var(--ink);margin-bottom:7px}
.field .req{color:var(--red)}
.inp{width:100%;border:1.5px solid var(--line);border-radius:11px;padding:13px 14px;font-size:15px;
  font-family:inherit;color:var(--ink);background:#fff;transition:.15s}
.inp:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 3px rgba(12,156,146,.12)}
.field .err{font-size:12.5px;color:var(--red);font-weight:700;margin-top:6px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.auth-alt{text-align:center;font-size:14px;color:var(--muted);margin-top:22px}
.auth-alt a{color:var(--teal-dark);font-weight:800}
.auth-row-between{display:flex;justify-content:space-between;align-items:center;font-size:13.5px}
.remember{display:flex;align-items:center;gap:8px;font-weight:600;color:var(--ink)}
.remember input{width:16px;height:16px;accent-color:var(--teal)}
.flash{background:var(--teal-soft);color:var(--teal-dark);border:1px solid #bfe6e2;border-radius:11px;
  padding:12px 15px;font-size:13.5px;font-weight:700;margin-bottom:18px}
.flash.err{background:#fdebee;color:#b23048;border-color:#f5c4cd}
.field-back{display:inline-flex;align-items:center;gap:7px;color:var(--muted);font-weight:700;font-size:13.5px;margin-bottom:20px}
@media(max-width:860px){.auth-wrap{grid-template-columns:1fr}.auth-brand{display:none}}
@media(max-width:460px){.row2{grid-template-columns:1fr}}

/* ---------- book detail ---------- */
.book-hero{color:#fff;padding:130px 0 60px;position:relative;overflow:hidden}
.book-hero .wrap{position:relative}
.bh-tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.bh-tags .t{font-size:12px;font-weight:800;background:rgba(0,0,0,.22);padding:6px 12px;border-radius:999px;backdrop-filter:blur(3px)}
.book-hero h1{font-size:clamp(30px,4.4vw,46px);font-weight:800;letter-spacing:-1px;line-height:1.08;max-width:760px}
.book-hero .bh-sub{font-size:17px;color:rgba(255,255,255,.9);margin-top:14px;max-width:620px}
.book-hero .bh-meta{display:flex;gap:26px;margin-top:26px;flex-wrap:wrap}
.book-hero .bh-meta .m b{font-size:24px;font-weight:800}
.book-hero .bh-meta .m span{display:block;font-size:12.5px;color:rgba(255,255,255,.8);font-weight:600}
.chapters{display:flex;flex-direction:column;gap:10px;max-width:760px;margin:0 auto}
.ch{display:flex;align-items:center;gap:16px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:15px 18px}
.ch .cx{font-family:'JetBrains Mono',monospace;font-weight:700;color:var(--muted);font-size:14px;width:26px}
.ch .ct{font-weight:700;color:var(--navy);font-size:15px;flex:1}
.ch .free{font-size:11.5px;font-weight:800;color:var(--green);background:var(--teal-soft);padding:5px 10px;border-radius:999px}
.ch .wt{width:90px;height:7px;border-radius:99px;background:var(--line);overflow:hidden}
.ch .wt i{display:block;height:100%;background:linear-gradient(90deg,var(--teal),var(--violet))}
@media(max-width:560px){.ch .wt{display:none}}

/* ---------- sample viewer ---------- */
.sample-top{background:linear-gradient(160deg,var(--navy),var(--navy-2));color:#fff;padding:120px 0 44px}
.sample-top .kicker{font-size:12.5px;font-weight:800;letter-spacing:1px;text-transform:uppercase;color:var(--teal-light);margin-bottom:10px}
.sample-top h1{font-size:clamp(26px,3.6vw,38px);font-weight:800;letter-spacing:-.6px}
.sample-top p{color:var(--d-muted);margin-top:8px}
.slider{position:relative;max-width:820px;margin:0 auto}
.slide-stage{border-radius:16px;overflow:hidden;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}
.slide-stage img{width:100%;max-height:520px;object-fit:contain;background:#fff}
.slide-cap{text-align:center;font-size:13.5px;color:var(--muted);margin-top:12px;font-weight:600;min-height:20px}
.slide-nav{display:flex;justify-content:center;align-items:center;gap:16px;margin-top:14px}
.slide-nav button{width:44px;height:44px;border-radius:50%;border:1.5px solid var(--line);background:#fff;
  font-size:18px;color:var(--navy);cursor:pointer;display:grid;place-items:center;transition:.15s}
.slide-nav button:hover{border-color:var(--teal);color:var(--teal-dark)}
.slide-dots{display:flex;gap:7px}
.slide-dots i{width:8px;height:8px;border-radius:50%;background:var(--line);cursor:pointer;transition:.15s}
.slide-dots i.on{background:var(--teal);width:22px;border-radius:99px}
.sections{max-width:760px;margin:36px auto 0;display:flex;flex-direction:column;gap:12px}
.sec-acc{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.sec-acc .sq{width:100%;text-align:left;background:none;border:none;cursor:pointer;font-family:inherit;
  padding:17px 20px;font-size:15.5px;font-weight:700;color:var(--navy);display:flex;align-items:center;gap:12px}
.sec-acc .sq .dot{width:11px;height:11px;border-radius:50%;flex-shrink:0}
.sec-acc .sq .pl{margin-left:auto;color:var(--muted);transition:.2s;font-size:19px}
.sec-acc .sa{padding:0 20px;font-size:15px;color:var(--ink);line-height:1.7}
.sec-acc .sa .inner{padding:0 0 18px}
.sec-acc .sa p{margin-bottom:10px}

/* ---------- section content blocks (shared reader + sample) ---------- */
.section-num{display:inline-block;font-size:12px;font-weight:800;letter-spacing:.8px;text-transform:uppercase;color:var(--teal-dark);background:var(--teal-soft);padding:5px 12px;border-radius:99px}
.blk-text{margin-bottom:12px}
.blk-text p{margin-bottom:10px}
.blk-text:last-child,.blk-text p:last-child{margin-bottom:0}
.blk-text ul,.blk-text ol{margin:0 0 10px 22px}
.blk-text ul li,.blk-text ol li{margin-bottom:4px}
/* tables authored in the Chapter-Info rich editor */
.blk-text .rt-table-wrap,.blk-text table{max-width:100%}
.blk-text table{width:100%;border-collapse:collapse;margin:6px 0 12px;font-size:14.5px;display:block;overflow-x:auto}
.blk-text table td,.blk-text table th{border:1px solid var(--line);padding:8px 11px;text-align:left;vertical-align:top}
.blk-text table th{background:var(--teal-soft);color:var(--navy);font-weight:800}
.blk-text table tr:nth-child(even) td{background:#fafcfe}
.key-seq{background:#FFF8E6;border-left:4px solid #E0A008;border-radius:0 10px 10px 0;padding:13px 16px;margin:12px 0}
.key-seq .k{font-size:11px;font-weight:800;letter-spacing:.8px;color:#E0A008;text-transform:uppercase}
.key-seq .v{color:var(--navy);font-weight:600;margin-top:5px;line-height:1.55}
.key-seq .v p{margin:0 0 6px}
.key-seq .v p:last-child{margin-bottom:0}
.key-seq .v ul,.key-seq .v ol{margin:6px 0 6px 20px;padding:0}
.key-seq .v li{margin-bottom:3px}
.feat-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:12px 0}
@media(max-width:560px){.feat-grid{grid-template-columns:1fr}}
.feat-card{background:#faf7f3;border:1px solid #ece4d8;border-radius:12px;padding:15px 16px}
.feat-card .h{font-size:11px;font-weight:800;letter-spacing:.6px;text-transform:uppercase;color:var(--violet)}
.feat-card ul{margin:9px 0 0;padding-left:18px}
.feat-card li{margin-bottom:5px;color:var(--ink)}
.feat-card li:last-child{margin-bottom:0}
.locked{max-width:760px;margin:40px auto 0;text-align:center;background:var(--teal-soft);border:1px dashed var(--teal);
  border-radius:16px;padding:30px}
.locked h3{color:var(--navy);font-size:20px;font-weight:800;margin-bottom:8px}
.locked p{color:var(--ink);margin-bottom:18px}

/* ---------- store / books listing ---------- */
.store-hero{background:radial-gradient(900px 500px at 80% -20%,rgba(126,87,194,.28),transparent 60%),
  linear-gradient(160deg,var(--d-0),var(--d-2));color:var(--d-text);padding:128px 0 46px}
.store-hero .eyebrow{color:var(--teal-light);background:rgba(12,156,146,.14)}
.store-hero h1{font-size:clamp(28px,4vw,42px);font-weight:800;letter-spacing:-.8px;color:#fff}
.store-hero p{font-size:16px;color:var(--d-muted);margin-top:12px;max-width:560px}
.store-body{padding:34px 0 80px}
.filters{position:sticky;top:70px;z-index:20;display:flex;gap:9px;flex-wrap:wrap;padding:16px 0;margin-bottom:8px;
  background:rgba(246,248,251,.92);backdrop-filter:blur(8px)}
.filt{background:#fff;border:1.5px solid var(--line);border-radius:999px;padding:9px 18px;font-size:13px;
  font-weight:700;color:var(--muted);cursor:pointer;transition:.15s;white-space:nowrap}
.filt:hover{border-color:var(--teal);color:var(--teal-dark)}
.filt.on{background:var(--navy);border-color:var(--navy);color:#fff}
.store-count{font-size:13px;color:var(--muted);font-weight:600;margin-bottom:18px}
.books-empty{text-align:center;color:var(--muted);padding:50px 0}
.book-card.hide{display:none}

/* ---------- book detail: 2-col with sticky plan ---------- */
.book-layout{display:grid;grid-template-columns:1fr 380px;gap:40px;align-items:start}
@media(max-width:900px){.book-layout{grid-template-columns:1fr;gap:26px}}
.book-main .blk{margin-bottom:32px}
.book-main .blk:last-child{margin-bottom:0}
.book-main h2.blk-title{font-size:22px;font-weight:800;color:var(--navy);letter-spacing:-.4px;margin-bottom:14px}
.book-main .about{font-size:16px;color:var(--ink);line-height:1.7}
.includes-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 24px}
.includes-card h5{font-size:12.5px;font-weight:800;text-transform:uppercase;letter-spacing:.8px;color:var(--navy);margin-bottom:15px}
.includes-card .f-list li{margin-bottom:11px}
.sample-box{background:var(--teal-soft);border:1.5px dashed var(--teal);border-radius:14px;padding:16px 20px;
  display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap}
.sample-box p{font-size:14px;font-weight:800;color:var(--navy)}
.sample-box small{display:block;font-weight:600;color:var(--muted);font-size:12px;margin-top:3px}

/* sticky plan panel */
.book-aside{position:sticky;top:90px;align-self:start}
@media(max-width:900px){.book-aside{position:static;top:auto}}
.plan-panel{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:var(--shadow)}
.plan-panel h3{font-size:18px;font-weight:800;color:var(--navy)}
.plan-panel .pp-lede{font-size:12.5px;color:var(--muted);margin:4px 0 16px}
.plan-pick{width:100%;text-align:left;border:2px solid var(--line);border-radius:14px;padding:15px 16px;margin-bottom:11px;
  background:#fff;cursor:pointer;display:flex;align-items:center;gap:13px;transition:.15s;position:relative;font-family:inherit}
.plan-pick:hover{border-color:#b9e2de}
.plan-pick.sel{border-color:var(--teal);background:var(--teal-soft);box-shadow:0 6px 18px rgba(12,156,146,.14)}
.pp-radio{width:20px;height:20px;border-radius:50%;border:2px solid #cdd6e2;flex:0 0 20px;display:grid;place-items:center;transition:.15s}
.plan-pick.sel .pp-radio{border-color:var(--teal)}
.plan-pick.sel .pp-radio::after{content:"";width:10px;height:10px;border-radius:50%;background:var(--teal)}
.pp-body{flex:1;min-width:0}
.pp-top{display:flex;justify-content:space-between;align-items:baseline;gap:8px}
.pp-top b{font-size:15px;font-weight:800;color:var(--navy)}
.pp-price{font-size:16px;font-weight:800;color:var(--navy);white-space:nowrap}
.pp-price s{font-size:12px;color:var(--muted);font-weight:600;margin-right:5px}
.pp-sub{display:flex;justify-content:space-between;gap:8px;font-size:11.5px;color:var(--muted);font-weight:600;margin-top:4px}
.pp-perday{color:var(--teal-dark);font-weight:800;white-space:nowrap}
.pp-badge{position:absolute;top:-10px;right:14px;background:linear-gradient(120deg,var(--teal),var(--teal-dark));
  color:#fff;font-size:10px;font-weight:800;padding:3px 11px;border-radius:99px;letter-spacing:.4px}
.pp-guarantee{display:flex;gap:8px;align-items:center;font-size:12px;color:var(--muted);font-weight:600;margin:14px 0 16px;line-height:1.4}
.plan-panel .btn{margin-top:2px}
.pp-secure{text-align:center;font-size:11.5px;color:var(--muted);margin-top:12px}

/* ---------- checkout review ---------- */
.co-topbar{position:fixed;top:0;left:0;right:0;z-index:50;background:rgba(9,15,26,.9);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--d-line)}
.co-topbar .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.co-topbar .secure{font-size:12.5px;font-weight:700;color:var(--d-muted);display:flex;align-items:center;gap:7px}
.checkout-page{min-height:100vh;background:var(--bg);padding:104px 0 60px}
.checkout-wrap{max-width:540px;margin:0 auto}
.co-back{display:inline-flex;align-items:center;gap:7px;color:var(--muted);font-weight:700;font-size:13.5px;margin-bottom:16px}
.co-head{text-align:center;margin-bottom:24px}
.co-head h1{font-size:26px;font-weight:800;color:var(--navy);letter-spacing:-.5px}
.co-head p{font-size:14px;color:var(--muted);margin-top:8px}
.order-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px 24px;box-shadow:var(--shadow)}
.order-book{display:flex;gap:14px;align-items:center;padding-bottom:16px;margin-bottom:8px;border-bottom:1px solid var(--line)}
.order-book .ob-cover{width:52px;height:52px;border-radius:12px;flex-shrink:0}
.order-book b{font-size:15.5px;font-weight:800;color:var(--navy);line-height:1.25;display:block}
.order-book span{font-size:12.5px;color:var(--muted);font-weight:600}
.o-row{display:flex;justify-content:space-between;align-items:center;font-size:14px;padding:8px 0;font-weight:600;color:var(--muted)}
.o-row b{color:var(--ink);font-weight:700}
.o-row.total{border-top:1px solid var(--line);margin-top:8px;padding-top:14px;font-size:15px;color:var(--ink)}
.o-row.total b{font-size:22px;color:var(--navy);font-weight:800}
.o-save{color:var(--green)!important}
.co-who{display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:13px 16px;margin:14px 0;font-size:13.5px}
.co-who .av{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--teal),var(--violet));
  color:#fff;display:grid;place-items:center;font-weight:800;flex-shrink:0}
.co-who b{color:var(--navy)}.co-who span{color:var(--muted);display:block;font-size:12px}
.co-guarantee{display:flex;gap:9px;align-items:center;justify-content:center;font-size:12.5px;color:var(--muted);font-weight:600;margin:16px 0}
.co-pay-note{text-align:center;font-size:11.5px;color:var(--muted);margin-top:14px;line-height:1.65}
.success-hero{text-align:center;margin-bottom:24px}
.success-hero .big-ic{width:72px;height:72px;border-radius:50%;background:#e7f6ef;color:var(--green);
  display:grid;place-items:center;font-size:34px;font-weight:800;margin:0 auto 18px;
  box-shadow:0 0 0 8px rgba(40,169,107,.10)}
.success-hero h1{font-size:26px;font-weight:800;color:var(--navy);letter-spacing:-.5px}
.success-hero p{font-size:14.5px;color:var(--muted);margin-top:8px}