/* ===== Max Mason — Coding with AI · site styles ===== */
@font-face{font-family:'Plex Sans';font-weight:400;font-display:swap;src:url(fonts/IBMPlexSans-Regular.woff2) format('woff2');}
@font-face{font-family:'Plex Sans';font-weight:500;font-display:swap;src:url(fonts/IBMPlexSans-Medium.woff2) format('woff2');}
@font-face{font-family:'Plex Sans';font-weight:600;font-display:swap;src:url(fonts/IBMPlexSans-SemiBold.woff2) format('woff2');}
@font-face{font-family:'Plex Sans';font-weight:700;font-display:swap;src:url(fonts/IBMPlexSans-Bold.woff2) format('woff2');}
@font-face{font-family:'Plex Serif';font-weight:400;font-style:normal;font-display:swap;src:url(fonts/IBMPlexSerif-Regular.woff2) format('woff2');}
@font-face{font-family:'Plex Serif';font-weight:400;font-style:italic;font-display:swap;src:url(fonts/IBMPlexSerif-Italic.woff2) format('woff2');}
@font-face{font-family:'Plex Serif';font-weight:500;font-style:normal;font-display:swap;src:url(fonts/IBMPlexSerif-Medium.woff2) format('woff2');}
@font-face{font-family:'Plex Mono';font-weight:500;font-display:swap;src:url(fonts/IBMPlexMono-Medium.woff2) format('woff2');}
@font-face{font-family:'Plex Mono';font-weight:600;font-display:swap;src:url(fonts/IBMPlexMono-SemiBold.woff2) format('woff2');}

:root{
  --ink:#10151D; --ink2:#171F2B; --ink3:#212B3B;
  --paper:#F4F2EB; --paper2:#FAF9F4; --card:#FFFFFF;
  --signal:#2B54F0; --signal-ink:#6E8BFF; --amber:#C9871E; --amber-ink:#EBA83E;
  --tx:#1B222C; --muted:#5B6470; --muted-ink:rgba(255,255,255,.6);
  --hair:#DED9CC; --hair-ink:rgba(255,255,255,.14);
  --ch:#C0703A; --cx:#2B54F0; --lv:#BE467E; --ag:#1F9469;
  --maxw:1120px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;background:var(--paper);color:var(--tx);
  font-family:'Plex Serif',Georgia,serif;font-size:17px;line-height:1.6;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;}
h1,h2,h3,h4,.sans{font-family:'Plex Sans',system-ui,sans-serif;}
.mono{font-family:'Plex Mono',ui-monospace,monospace;}
a{color:var(--signal);text-decoration:none;}
a:hover{text-decoration:underline;}
img,svg{display:block;max-width:100%;}
:focus-visible{outline:2.5px solid var(--signal);outline-offset:3px;border-radius:3px;}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px;}
.eyebrow{font-family:'Plex Mono',monospace;font-size:12px;letter-spacing:.28em;
  text-transform:uppercase;color:var(--amber);font-weight:500;margin:0;}
.eyebrow.on-ink{color:var(--amber-ink);}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:.5em;font-family:'Plex Mono',monospace;
  font-size:13px;letter-spacing:.1em;text-transform:uppercase;font-weight:600;
  padding:14px 24px;border-radius:4px;border:1.5px solid transparent;cursor:pointer;
  transition:transform .12s ease, background .15s ease, border-color .15s ease;text-decoration:none;}
.btn:hover{text-decoration:none;transform:translateY(-1px);}
.btn-primary{background:var(--amber-ink);color:var(--ink);}
.btn-primary:hover{background:#F2B551;}
.btn-ghost{background:transparent;color:#fff;border-color:var(--hair-ink);}
.btn-ghost:hover{border-color:rgba(255,255,255,.5);}
.btn-dark{background:var(--ink);color:#fff;}
.btn-dark:hover{background:var(--ink2);}

/* ---------- nav ---------- */
.nav{position:sticky;top:0;z-index:50;background:rgba(16,21,29,.92);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--hair-ink);}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:64px;}
.brand{font-family:'Plex Sans',sans-serif;font-weight:700;font-size:18px;color:#fff;
  letter-spacing:-.01em;display:flex;align-items:center;gap:9px;}
.brand .mk{width:9px;height:9px;border-radius:50%;background:var(--amber-ink);}
.brand:hover{text-decoration:none;}
.navlinks{display:flex;align-items:center;gap:28px;}
.navlinks a{font-family:'Plex Mono',monospace;font-size:12px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--muted-ink);}
.navlinks a:hover{color:#fff;text-decoration:none;}
.navlinks .btn{padding:9px 16px;}
.navtoggle{display:none;background:none;border:0;color:#fff;font-size:22px;cursor:pointer;}

/* ---------- hero ---------- */
.hero{position:relative;background:var(--ink);color:#fff;overflow:hidden;
  padding:96px 0 104px;}
.hero .arc{position:absolute;right:-6%;top:-4%;width:min(720px,68%);opacity:.9;pointer-events:none;}
.hero .wrap{position:relative;z-index:2;}
.hero h1{font-size:clamp(48px,9vw,104px);line-height:.94;font-weight:700;
  letter-spacing:-.025em;margin:20px 0 0;}
.hero h1 .thin{font-weight:200;color:var(--signal-ink);}
.hero .sub{font-family:'Plex Serif',serif;font-style:italic;font-size:clamp(18px,2.4vw,23px);
  line-height:1.5;color:rgba(255,255,255,.84);max-width:620px;margin:26px 0 0;}
.hero .actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
.hero .chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:46px;}
.chip{font-family:'Plex Mono',monospace;font-size:12px;letter-spacing:.08em;
  color:#fff;padding:6px 12px;border-radius:3px;display:inline-flex;gap:7px;align-items:center;}
.chip .d{width:6px;height:6px;border-radius:50%;background:rgba(255,255,255,.85);}

/* ---------- section scaffolding ---------- */
section{padding:84px 0;}
.sec-head{max-width:720px;margin-bottom:44px;}
.sec-head h2{font-size:clamp(28px,4vw,40px);line-height:1.05;font-weight:700;
  letter-spacing:-.02em;margin:12px 0 0;color:#12181F;}
.sec-head h2 .accent{color:var(--signal);}
.sec-head .dek{font-size:19px;color:#39424E;margin:16px 0 0;font-style:italic;}
.tickrule{height:9px;width:100%;margin-bottom:8px;
  background:repeating-linear-gradient(90deg,var(--hair) 0 1px,transparent 1px 12px);
  border-bottom:1px solid var(--hair);}

/* premise */
.premise{background:var(--paper2);}
.premise p{font-size:clamp(20px,2.6vw,26px);line-height:1.5;max-width:820px;color:#20272F;}
.premise p b{color:#12181F;font-weight:600;}

/* tools grid */
.tools-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.tool{background:var(--card);border:1px solid var(--hair);border-radius:8px;
  padding:26px 22px;border-top:3px solid var(--t,#2B54F0);}
.tool .cs{font-family:'Plex Mono',monospace;font-size:12px;font-weight:600;
  color:var(--t,#2B54F0);letter-spacing:.08em;}
.tool h3{font-size:21px;font-weight:600;margin:10px 0 8px;letter-spacing:-.01em;color:#12181F;}
.tool p{font-size:15px;line-height:1.5;color:#454e59;margin:0;}

/* syllabus */
.syllabus{background:var(--ink);color:#fff;}
.syllabus .sec-head h2{color:#fff;}
.syllabus .sec-head .dek{color:rgba(255,255,255,.7);}
.mod{display:flex;align-items:baseline;gap:20px;padding:20px 0;border-top:1px solid var(--hair-ink);}
.mod:last-child{border-bottom:1px solid var(--hair-ink);}
.mod .id{font-family:'Plex Mono',monospace;font-weight:600;font-size:14px;
  width:66px;flex:none;letter-spacing:.04em;}
.mod .body{flex:1;}
.mod .nm{font-family:'Plex Sans',sans-serif;font-weight:600;font-size:19px;color:#fff;letter-spacing:-.01em;}
.mod .sub{font-size:15px;color:rgba(255,255,255,.62);margin-top:3px;}
.mod .ct{font-family:'Plex Mono',monospace;font-size:12px;color:var(--muted-ink);
  letter-spacing:.08em;white-space:nowrap;}

/* outcomes */
.outcomes ul{list-style:none;padding:0;margin:0;display:grid;
  grid-template-columns:1fr 1fr;gap:0 46px;}
.outcomes li{position:relative;padding:16px 0 16px 30px;border-bottom:1px solid var(--hair);
  font-size:16.5px;line-height:1.45;color:#2c333d;}
.outcomes li::before{content:"";position:absolute;left:0;top:20px;width:13px;height:13px;
  border:1.6px solid var(--signal);border-radius:3px;}

/* about */
.about{background:var(--paper2);}
.about-grid{display:grid;grid-template-columns:220px 1fr;gap:46px;align-items:start;}
.about .badge{background:var(--ink);border-radius:8px;padding:28px;color:#fff;position:relative;overflow:hidden;}
.about .badge .arc2{position:absolute;right:-30px;bottom:-20px;width:150px;opacity:.5;}
.about .badge .lab{font-family:'Plex Mono',monospace;font-size:11px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--amber-ink);}
.about .badge .nm{font-family:'Plex Sans',sans-serif;font-weight:700;font-size:24px;margin-top:10px;}
.about .badge .role{font-family:'Plex Mono',monospace;font-size:11px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--muted-ink);margin-top:8px;line-height:1.6;}
.about-text p{font-size:18px;line-height:1.62;color:#2b333d;}

/* waitlist */
.waitlist{background:var(--ink);color:#fff;}
.wl-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.waitlist .sec-head h2{color:#fff;}
.waitlist .lead{font-size:19px;color:rgba(255,255,255,.8);line-height:1.55;margin:16px 0 0;}
.waitlist .free{margin-top:24px;font-family:'Plex Mono',monospace;font-size:13px;
  letter-spacing:.06em;color:var(--signal-ink);}
.form{background:var(--ink2);border:1px solid var(--hair-ink);border-radius:10px;padding:30px;}
.form label{display:block;font-family:'Plex Mono',monospace;font-size:11px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--muted-ink);margin:0 0 7px;}
.field{margin-bottom:18px;}
.form input,.form textarea{width:100%;background:#0C1119;border:1px solid var(--hair-ink);
  border-radius:6px;color:#fff;font-family:'Plex Sans',sans-serif;font-size:15px;padding:12px 14px;}
.form input:focus,.form textarea:focus{outline:none;border-color:var(--signal-ink);}
.form textarea{resize:vertical;min-height:74px;}
.form .btn-primary{width:100%;justify-content:center;font-size:14px;padding:15px;}
.form .privacy{font-size:12.5px;color:var(--muted-ink);margin:14px 0 0;text-align:center;line-height:1.5;}
.form-success{display:none;text-align:center;padding:22px 10px;}
.form-success .tick{width:52px;height:52px;border-radius:50%;background:var(--ag);
  display:flex;align-items:center;justify-content:center;margin:0 auto 16px;color:#fff;font-size:26px;}
.form-success h3{font-size:22px;color:#fff;margin:0 0 8px;}
.form-success p{color:rgba(255,255,255,.72);margin:0;font-size:15px;}
.is-sent .form-body{display:none;}
.is-sent .form-success{display:block;}

/* footer */
footer{background:#0B0F16;color:var(--muted-ink);padding:52px 0 40px;}
.foot-grid{display:flex;justify-content:space-between;align-items:flex-start;gap:30px;flex-wrap:wrap;}
footer .brand{margin-bottom:14px;}
footer .tagline{font-family:'Plex Serif',serif;font-style:italic;font-size:15px;
  color:rgba(255,255,255,.55);max-width:360px;}
.foot-links{display:flex;gap:26px;flex-wrap:wrap;}
.foot-links a{font-family:'Plex Mono',monospace;font-size:12px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--muted-ink);}
.foot-links a:hover{color:#fff;text-decoration:none;}
.colophon{margin-top:36px;padding-top:20px;border-top:1px solid var(--hair-ink);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
  font-family:'Plex Mono',monospace;font-size:11px;letter-spacing:.12em;
  text-transform:uppercase;color:rgba(255,255,255,.4);}

/* ---------- responsive ---------- */
@media (max-width:860px){
  .tools-grid{grid-template-columns:1fr 1fr;}
  .outcomes ul{grid-template-columns:1fr;}
  .about-grid{grid-template-columns:1fr;gap:28px;}
  .wl-grid{grid-template-columns:1fr;gap:32px;}
  .navlinks{display:none;}
  .navlinks.open{display:flex;position:absolute;top:64px;left:0;right:0;
    flex-direction:column;gap:0;background:var(--ink);border-bottom:1px solid var(--hair-ink);padding:8px 0;}
  .navlinks.open a{padding:14px 28px;width:100%;}
  .navlinks.open .btn{margin:10px 28px;width:calc(100% - 56px);justify-content:center;}
  .navtoggle{display:block;}
}
@media (max-width:520px){
  section{padding:60px 0;}
  .hero{padding:64px 0 72px;}
  .tools-grid{grid-template-columns:1fr;}
  .mod{flex-wrap:wrap;gap:6px 16px;}
  .mod .ct{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;} *{transition:none!important;}
}

/* ===================== PRODUCT / STORE COMPONENTS ===================== */
.badge{display:inline-block;font-family:'Plex Mono',monospace;font-size:10.5px;font-weight:600;
  letter-spacing:.12em;text-transform:uppercase;padding:4px 10px;border-radius:3px;
  background:rgba(43,84,240,.1);color:var(--signal);border:1px solid rgba(43,84,240,.2);}
.badge.soon{background:rgba(91,100,112,.12);color:var(--muted);border-color:var(--hair);}
.badge.live{background:rgba(31,148,105,.12);color:#137a54;border-color:rgba(31,148,105,.3);}
.badge.on-ink{background:rgba(235,168,62,.16);color:var(--amber-ink);border-color:rgba(235,168,62,.3);}

/* product lines (3-up overview) */
.lines{background:var(--paper2);}
.lines-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.line-card{background:var(--card);border:1px solid var(--hair);border-radius:10px;padding:28px 26px;
  border-top:3px solid var(--t,#2B54F0);display:flex;flex-direction:column;}
.line-card .tag{font-family:'Plex Mono',monospace;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--t,#2B54F0);font-weight:600;}
.line-card h3{font-size:22px;font-weight:600;margin:9px 0 10px;letter-spacing:-.01em;color:#12181F;}
.line-card p{font-size:15px;line-height:1.55;color:#454e59;margin:0 0 20px;flex:1;}
.line-card a{font-family:'Plex Mono',monospace;font-size:12px;letter-spacing:.1em;text-transform:uppercase;font-weight:600;}

/* course cards */
.courses-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.course-card{background:var(--card);border:1px solid var(--hair);border-radius:10px;padding:26px 24px;
  display:flex;flex-direction:column;position:relative;border-top:3px solid var(--t,#2B54F0);}
.course-card .top{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:14px;gap:10px;}
.course-card .code{font-family:'Plex Mono',monospace;font-size:11px;letter-spacing:.08em;color:var(--t,#2B54F0);font-weight:600;padding-top:4px;}
.course-card h3{font-size:23px;font-weight:700;margin:0 0 10px;letter-spacing:-.015em;color:#12181F;}
.course-card p{font-size:14.5px;line-height:1.55;color:#454e59;margin:0 0 14px;flex:1;}
.course-card .cmeta{font-family:'Plex Mono',monospace;font-size:11px;letter-spacing:.06em;color:var(--muted);margin-bottom:20px;}
.course-card .buy{border-top:1px solid var(--hair);padding-top:18px;margin-top:auto;}
.course-card .price{font-family:'Plex Sans',sans-serif;font-weight:700;font-size:26px;color:#12181F;letter-spacing:-.02em;}
.course-card .pnote{font-family:'Plex Mono',monospace;font-size:10.5px;letter-spacing:.06em;color:var(--muted);text-transform:uppercase;margin:3px 0 14px;}
.course-card .actions-row{display:flex;gap:10px;flex-wrap:wrap;align-items:center;}
.course-card .prev{font-family:'Plex Mono',monospace;font-size:11px;letter-spacing:.08em;text-transform:uppercase;}
.course-card.soon{opacity:.96;background:var(--paper2);}
.course-card.soon h3{color:#3a434e;}

/* TEAMS featured (on ink) */
.teams{background:var(--ink);color:#fff;}
.teams .sec-head h2{color:#fff;}
.teams-card{display:grid;grid-template-columns:1.15fr .85fr;gap:0;border:1px solid var(--hair-ink);
  border-radius:14px;overflow:hidden;background:var(--ink2);}
.teams-card .left{padding:38px 40px;}
.teams-card .tagline{font-family:'Plex Serif',serif;font-style:italic;font-size:19px;line-height:1.5;
  color:rgba(255,255,255,.86);margin:14px 0 26px;}
.teams-card .inc-h{font-family:'Plex Mono',monospace;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--amber-ink);margin-bottom:14px;}
.teams-card ul{list-style:none;margin:0;padding:0;}
.teams-card li{position:relative;padding:9px 0 9px 30px;font-size:15.5px;line-height:1.45;color:rgba(255,255,255,.9);
  border-bottom:1px solid rgba(255,255,255,.06);}
.teams-card li:last-child{border-bottom:none;}
.teams-card li::before{content:"";position:absolute;left:0;top:14px;width:12px;height:12px;border-radius:3px;
  background:var(--ag);box-shadow:0 0 0 3px rgba(31,148,105,.18);}
.teams-card .value{font-family:'Plex Serif',serif;font-style:italic;font-size:14px;color:rgba(255,255,255,.62);
  margin-top:22px;line-height:1.5;border-left:2px solid var(--amber);padding-left:14px;}
.teams-card .right{background:#0C1119;padding:38px 34px;display:flex;flex-direction:column;justify-content:center;
  border-left:1px solid var(--hair-ink);}
.teams-card .price{font-family:'Plex Sans',sans-serif;font-weight:700;font-size:56px;line-height:1;color:#fff;letter-spacing:-.03em;}
.teams-card .price .per{font-size:18px;font-weight:400;color:var(--muted-ink);letter-spacing:0;}
.teams-card .seats{font-family:'Plex Mono',monospace;font-size:12px;letter-spacing:.06em;color:var(--signal-ink);margin-top:12px;}
.teams-card .annual{font-family:'Plex Mono',monospace;font-size:11px;letter-spacing:.04em;color:var(--muted-ink);margin-top:6px;text-transform:uppercase;}
.teams-card .right .btn{width:100%;justify-content:center;margin-top:24px;font-size:14px;padding:15px;}
.teams-card .foot{font-size:11.5px;color:var(--muted-ink);margin-top:16px;line-height:1.5;}

/* CREDITS */
.credits{background:var(--paper2);}
.credits-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.pack{background:var(--card);border:1px solid var(--hair);border-radius:10px;padding:28px 26px;text-align:center;position:relative;}
.pack.best{border-color:var(--signal);box-shadow:0 6px 24px rgba(43,84,240,.12);}
.pack .flag{position:absolute;top:-11px;left:50%;transform:translateX(-50%);background:var(--signal);color:#fff;
  font-family:'Plex Mono',monospace;font-size:10px;letter-spacing:.12em;text-transform:uppercase;font-weight:600;padding:4px 12px;border-radius:20px;}
.pack .amt{font-family:'Plex Sans',sans-serif;font-weight:700;font-size:34px;color:#12181F;letter-spacing:-.02em;}
.pack .amt small{font-size:14px;font-weight:500;color:var(--muted);letter-spacing:.04em;}
.pack .price{font-family:'Plex Sans',sans-serif;font-weight:600;font-size:22px;color:var(--signal);margin:8px 0 4px;}
.pack .note{font-family:'Plex Mono',monospace;font-size:11px;letter-spacing:.05em;color:var(--muted);text-transform:uppercase;margin-bottom:20px;}
.pack .btn{width:100%;justify-content:center;}
.credits .foot-note{font-size:13px;color:var(--muted);margin-top:22px;text-align:center;font-style:italic;}

/* BOOK */
.book-grid{display:grid;grid-template-columns:1fr 300px;gap:46px;align-items:center;}
.book-cover{background:var(--ink);border-radius:10px;padding:40px 30px;position:relative;overflow:hidden;aspect-ratio:3/4;
  display:flex;flex-direction:column;justify-content:space-between;box-shadow:0 14px 40px rgba(16,21,29,.22);}
.book-cover .arc3{position:absolute;right:-40px;top:40px;width:180px;opacity:.55;}
.book-cover .kick{font-family:'Plex Mono',monospace;font-size:10px;letter-spacing:.24em;text-transform:uppercase;color:var(--amber-ink);position:relative;}
.book-cover .bt{font-family:'Plex Sans',sans-serif;font-weight:700;font-size:30px;line-height:1.05;color:#fff;letter-spacing:-.02em;position:relative;}
.book-cover .ba{font-family:'Plex Mono',monospace;font-size:11px;letter-spacing:.1em;color:var(--muted-ink);position:relative;}
.book-info .status{margin-bottom:10px;}
.book-info p{font-size:17px;line-height:1.6;color:#2b333d;}
.book-info .buy{margin-top:22px;display:flex;align-items:center;gap:20px;flex-wrap:wrap;}
.book-info .price{font-family:'Plex Sans',sans-serif;font-weight:700;font-size:28px;color:#12181F;letter-spacing:-.02em;}
.book-info .pnote{font-family:'Plex Mono',monospace;font-size:11px;letter-spacing:.06em;color:var(--muted);text-transform:uppercase;}

/* PLANS */
.plans{background:var(--paper2);}
.plans-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;max-width:820px;}
.plan{background:var(--card);border:1px solid var(--hair);border-radius:12px;padding:32px 30px;position:relative;}
.plan.featured{border-color:var(--ink);border-width:1.5px;box-shadow:0 8px 30px rgba(16,21,29,.1);}
.plan h3{font-family:'Plex Sans',sans-serif;font-size:15px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin:0 0 12px;}
.plan .price{font-family:'Plex Sans',sans-serif;font-weight:700;font-size:38px;color:#12181F;letter-spacing:-.025em;}
.plan .period{font-family:'Plex Mono',monospace;font-size:11.5px;letter-spacing:.05em;color:var(--muted);text-transform:uppercase;margin:6px 0 20px;}
.plan ul{list-style:none;padding:0;margin:0 0 24px;}
.plan li{position:relative;padding:8px 0 8px 26px;font-size:15px;line-height:1.45;color:#2c333d;border-bottom:1px solid var(--hair);}
.plan li::before{content:"";position:absolute;left:0;top:12px;width:11px;height:11px;border:1.5px solid var(--signal);border-radius:3px;}
.plan.featured li::before{background:var(--signal);}
.plan .btn{width:100%;justify-content:center;}

/* responsive for store */
@media (max-width:860px){
  .lines-grid,.courses-grid,.credits-grid{grid-template-columns:1fr;}
  .teams-card{grid-template-columns:1fr;}
  .teams-card .right{border-left:none;border-top:1px solid var(--hair-ink);}
  .book-grid{grid-template-columns:1fr;gap:28px;}
  .book-cover{max-width:280px;aspect-ratio:3/4;}
  .plans-grid{grid-template-columns:1fr;}
}