/* Layout: alternating night-navy and ice-white bands, like crossing a bridge from problem to answer; the cover is the hero. Single brand look in both themes. */
:root{
  --navy:#08182E; --navy-2:#0F2442; --sky:#7FD3F0; --sky-deep:#1F7EA6; --ice:#E0FFFC;
  --paper:#F4FBFB; --ink:#0B1B30; --ink-soft:#3E5168; --line-dark:#22395A; --line-light:#C9E3E6;
  --display:"Montserrat",system-ui,sans-serif; --body:"Source Sans 3",system-ui,sans-serif; --mono:"IBM Plex Mono",ui-monospace,monospace;
  color-scheme:light;
}
*{box-sizing:border-box}
body{background:var(--navy);color:var(--ice);font-family:var(--body);font-size:18px;line-height:1.55}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:10;background:var(--navy)}
.wrap{max-width:1120px;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
h1,h2,h3{font-family:var(--display);text-wrap:balance;margin:0;line-height:1.15}
p{margin:0}
a{color:inherit}
.btn{display:inline-flex;align-items:center;gap:.5em;font-family:var(--display);font-weight:700;font-size:16px;text-decoration:none;padding:14px 24px;border-radius:6px;background:var(--sky);color:var(--navy);border:2px solid var(--sky);transition:transform .15s,background .15s}
.btn:hover{background:var(--ice);border-color:var(--ice)}
.btn:focus-visible{outline:3px solid var(--ice);outline-offset:3px}
.btn.ghost{background:transparent;color:var(--sky)}
.btn.ghost:hover{background:rgba(127,211,240,.12)}
.eyebrow{font-family:var(--display);font-weight:600;font-size:13px;letter-spacing:.18em;text-transform:uppercase;color:var(--sky)}

.banner{background:var(--sky);color:var(--navy);text-align:center;font-size:14px;font-weight:600;padding-block:8px}
header{position:sticky;top:env(safe-area-inset-top,0px);z-index:5;background:rgba(8,24,46,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line-dark)}
header .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-block:14px}
header img{height:46px;width:auto;display:block}
nav{display:flex;align-items:center;gap:28px;font-family:var(--display);font-weight:500;font-size:15px}
nav a{text-decoration:none;color:var(--ice);opacity:.85}
nav a:hover{opacity:1;color:var(--sky)}
nav .btn{padding:10px 18px;font-size:14px;opacity:1;color:var(--navy)}

.hero .wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;padding-block:72px 88px}
.hero h1{font-size:clamp(38px,5.2vw,62px);font-weight:700;letter-spacing:-.01em;margin-top:14px}
.hero h1 em{font-style:normal;color:var(--sky)}
.hero .lede{font-size:20px;color:#BFE3EA;max-width:34em;margin-top:22px}
.hero .ctas{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero .fine{font-size:14px;color:#8FB3C4;margin-top:14px}
.price-inline s{opacity:.6;margin-right:4px}
.cover{position:relative;justify-self:center;max-width:380px;width:100%}
.cover img{width:100%;display:block;border-radius:4px;box-shadow:0 30px 60px rgba(0,0,0,.45),0 0 0 1px var(--line-dark);transform:rotate(1.5deg)}
.cover .tag{position:absolute;left:-18px;top:46%;background:var(--ice);color:var(--navy);font-family:var(--display);font-weight:700;font-size:14px;padding:10px 14px;border-radius:4px;box-shadow:0 10px 24px rgba(0,0,0,.35)}

.light{background:var(--paper);color:var(--ink)}
.light .eyebrow{color:var(--sky-deep)}
section .wrap{padding-block:88px}
.section-head{max-width:720px;display:grid;gap:14px;margin-bottom:44px}
.section-head h2{font-size:clamp(30px,3.6vw,42px);font-weight:700}
.section-head p{color:var(--ink-soft);font-size:19px}

/* the week: Monday to Friday strip */
.week{display:grid;grid-template-columns:repeat(5,1fr);border-top:2px solid var(--ink)}
.day{padding:18px 18px 22px;border-right:1px solid var(--line-light);display:grid;gap:8px;align-content:start;min-width:0}
.day:last-child{border-right:0}
.day .d{font-family:var(--mono);font-size:13px;color:var(--sky-deep);text-transform:uppercase;letter-spacing:.08em}
.day h3{font-size:18px;font-weight:600}
.day .before{font-size:15px;color:var(--ink-soft);text-decoration:line-through;text-decoration-color:rgba(62,81,104,.45)}
.day .after{font-size:15px;font-weight:600;color:var(--ink)}
.week-note{margin-top:22px;font-size:15px;color:var(--ink-soft)}

/* prompt sample */
.sample .wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:center}
.sample h2{font-size:clamp(28px,3.2vw,38px);font-weight:700;margin-top:12px}
.sample .copy p{color:#BFE3EA;margin-top:18px}
.prompt{background:var(--navy-2);border:1px solid var(--line-dark);border-radius:8px;overflow:hidden;min-width:0}
.prompt .bar{display:flex;justify-content:space-between;align-items:center;padding:10px 16px;border-bottom:1px solid var(--line-dark);font-family:var(--mono);font-size:12px;color:#8FB3C4}
.prompt pre{margin:0;padding:20px;font-family:var(--mono);font-size:14px;line-height:1.65;color:var(--ice);white-space:pre-wrap;overflow-x:auto}
.prompt .b{color:var(--sky)}
.copybtn{font:inherit;background:transparent;border:1px solid var(--line-dark);color:var(--sky);border-radius:4px;padding:4px 10px;cursor:pointer}
.copybtn:focus-visible{outline:2px solid var(--sky)}

/* chapters */
.chapters{display:grid;grid-template-columns:repeat(2,1fr);grid-template-rows:repeat(5,auto);grid-auto-flow:column;gap:0 48px}
.ch{display:grid;grid-template-columns:44px 1fr;gap:14px;padding-block:18px;border-top:1px solid var(--line-light)}
.ch .n{font-family:var(--mono);font-size:14px;color:var(--sky-deep);padding-top:3px}
.ch h3{font-size:17px;font-weight:600}
.ch p{font-size:15px;color:var(--ink-soft);margin-top:3px}
.plus{margin-top:28px;display:flex;flex-wrap:wrap;gap:12px 28px;font-weight:600}
.plus span{display:inline-flex;gap:8px;align-items:center}
.plus span::before{content:"";width:8px;height:8px;background:var(--sky-deep);border-radius:50%}

/* buy */
.buy .wrap{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.buy h2{font-size:clamp(30px,3.6vw,44px);font-weight:700}
.buy .copy p{color:#BFE3EA;margin-top:16px}
.card{background:var(--ice);color:var(--navy);border-radius:10px;padding:32px;display:grid;gap:18px}
.card .p{display:flex;align-items:baseline;gap:12px;font-family:var(--display)}
.card .p strong{font-size:56px;font-weight:700;line-height:1}
.card .p s{font-size:22px;color:#4C6680}
.card .p span{font-size:14px;font-weight:600;background:var(--navy);color:var(--sky);padding:4px 8px;border-radius:4px}
.card ul{margin:0;padding:0;list-style:none;display:grid;gap:8px}
.card li{padding-left:26px;position:relative}
.card li::before{content:"";position:absolute;left:0;top:.45em;width:12px;height:7px;border-left:2px solid var(--sky-deep);border-bottom:2px solid var(--sky-deep);transform:rotate(-45deg)}
.card .btn{justify-content:center;background:var(--navy);color:var(--ice);border-color:var(--navy)}
.card .btn:hover{background:var(--navy-2)}
.card small{font-size:14px;color:#4C6680;text-align:center}

/* free */
.free .wrap{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.free h2{font-size:clamp(26px,3vw,34px);font-weight:700;margin-top:10px}
.free p{color:var(--ink-soft);margin-top:12px}
form{display:flex;flex-wrap:wrap;gap:10px}
input{flex:1 1 220px;min-width:0;font:inherit;font-size:16px;padding:13px 14px;border:1.5px solid var(--line-light);border-radius:6px;background:#fff;color:var(--ink)}
input:focus-visible{outline:2px solid var(--sky-deep);border-color:var(--sky-deep)}
form .btn{background:var(--navy);color:var(--ice);border-color:var(--navy);cursor:pointer}
.formnote{font-size:14px;color:var(--ink-soft);margin-top:10px;min-height:1.4em}

/* faq */
.faq{display:grid;grid-template-columns:repeat(2,1fr);gap:28px 48px}
.faq h3{font-size:17px;font-weight:600}
.faq p{font-size:16px;color:var(--ink-soft);margin-top:6px}

footer .wrap{padding-block:48px;display:grid;grid-template-columns:1fr auto;gap:24px;align-items:end}
footer img{height:54px;width:auto}
footer p{font-size:14px;color:#8FB3C4;margin-top:10px}
footer .links{display:flex;flex-wrap:wrap;gap:8px 22px;font-size:14px}
footer .links a{text-decoration:none;color:#BFE3EA}
.preview-note{background:var(--navy-2);color:#8FB3C4;font-size:13px;text-align:center;padding-block:10px;border-top:1px solid var(--line-dark)}

@media (max-width:860px){
  nav a:not(.btn){display:none}
  .hero .wrap,.sample .wrap,.buy .wrap,.free .wrap{grid-template-columns:1fr;gap:40px}
  .hero .wrap{padding-block:48px 64px}
  .cover{max-width:280px}
  .week{grid-template-columns:1fr;border-top:0}
  .day{border-right:0;border-top:1px solid var(--line-light);grid-template-columns:90px 1fr;column-gap:14px}
  .day .d{grid-row:span 3}
  .chapters,.faq{grid-template-columns:1fr}
  .chapters{grid-template-rows:none;grid-auto-flow:row}
  section .wrap{padding-block:64px}
  footer .wrap{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}

body{margin:0}
img{max-width:100%}
.page .wrap{padding-block:64px 88px;max-width:780px}
.page h1{font-size:clamp(32px,4vw,46px);font-weight:700;margin:12px 0 20px}
.page h2{font-size:22px;font-weight:700;margin:36px 0 10px}
.page p,.page li{color:var(--ink-soft);margin-top:10px}
.page ul{padding-left:20px}
.page a{color:var(--sky-deep)}
.contact{margin-top:20px;display:grid;gap:12px}
.contact textarea{font:inherit;font-size:16px;padding:13px 14px;border:1.5px solid var(--line-light);border-radius:6px;min-height:140px;width:100%;color:var(--ink);background:#fff}
.contact textarea:focus-visible{outline:2px solid var(--sky-deep)}
.contact .btn{justify-self:start;background:var(--navy);color:var(--ice);border-color:var(--navy);cursor:pointer}
.hidden{display:none}