:root{
  --ink:#16223a; --ink-2:#22314f; --ink-3:#2b3a55; --body:#2a3140; --muted:#5d6676;
  --accent:#2a6f64; --accent-d:#1f5249; --mint:#8fd0c3; --mint-soft:#e9f2ef;
  --paper:#ffffff; --tint:#f5f6f8; --rule:#dde1e7; --sale:#b8432f; --gold:#c48a1c;
  --radius:10px; --wrap:1120px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--body);font-family:'Inter',system-ui,sans-serif;font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{font-family:'Lora',Georgia,serif;color:var(--ink);font-weight:600;line-height:1.15;margin:0}
p{margin:0 0 1em}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.kicker{font-size:12px;letter-spacing:.2em;text-transform:uppercase;font-weight:700;color:var(--accent)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.skip-link{position:fixed;left:16px;top:12px;z-index:100;background:#fff;color:var(--ink);padding:10px 14px;border-radius:6px;transform:translateY(-150%)}
.skip-link:focus{transform:translateY(0)}

/* sale bar + nav */
.salebar{background:var(--accent-d);color:#e7f4f1;text-align:center;font-size:14px;padding:9px 16px}
.salebar b{color:#fff}
.nav{background:var(--ink);position:sticky;top:0;z-index:20;border-bottom:1px solid rgba(255,255,255,.08)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font-family:'Lora',serif;font-size:21px;color:#fff;font-weight:600;letter-spacing:-.01em}
.logo em{color:var(--mint);font-weight:500}
.logo:hover{text-decoration:none}
.nav ul{display:flex;gap:28px;list-style:none;margin:0;padding:0;align-items:center}
.nav ul a{color:#c8d0dc;font-size:14.5px}
.nav ul a:hover{color:#fff;text-decoration:none}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;cursor:pointer;font:600 15.5px 'Inter',sans-serif;border-radius:8px;padding:13px 22px;transition:transform .12s ease,background .15s ease,box-shadow .15s ease;text-decoration:none!important}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--mint);color:var(--ink)}
.btn-primary:hover{background:#a6dccf}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-d)}
.btn-ghost{background:transparent;color:#fff;box-shadow:inset 0 0 0 1.5px rgba(255,255,255,.35)}
.btn-ghost:hover{box-shadow:inset 0 0 0 1.5px #fff}
.btn-sm{padding:9px 16px;font-size:14px}
.btn[disabled]{opacity:.65;cursor:wait}
@media(max-width:760px){.nav ul li:not(:last-child){display:none}}

/* hero */
.hero{background:var(--ink);color:#d7deea;overflow:hidden;position:relative}
.hero::after{content:"";position:absolute;inset:auto -10% -40% auto;width:60%;height:80%;background:radial-gradient(closest-side,rgba(143,208,195,.12),transparent);pointer-events:none}
.hero .wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center;padding-top:76px;padding-bottom:88px;position:relative;z-index:1}
.hero .kicker{color:var(--mint)}
.hero h1{color:#fff;font-size:clamp(36px,5vw,56px);margin:14px 0 20px;letter-spacing:-.015em}
.hero h1 em{color:var(--mint);font-weight:500}
.hero .lede{font-size:18.5px;line-height:1.6;color:#c6cfdc;max-width:540px;margin-bottom:30px}
.hero .ctas{display:flex;gap:12px;flex-wrap:wrap}
.hero .note{margin-top:18px;font-size:13.5px;color:#9eabbf}
.covers{position:relative;height:440px}
.covers img{position:absolute;width:62%;border-radius:4px;box-shadow:0 30px 60px -20px rgba(0,0,0,.6),0 0 0 1px rgba(255,255,255,.06)}
.covers .c1{left:4%;top:28px;transform:rotate(-6deg)}
.covers .c2{right:4%;top:0;transform:rotate(4deg)}
@media(max-width:860px){.hero .wrap{grid-template-columns:1fr;padding-top:52px;padding-bottom:60px}.covers{height:340px;max-width:420px;margin:0 auto;width:100%}}

/* stats strip */
.strip{background:var(--tint);border-bottom:1px solid var(--rule)}
.strip .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding-top:26px;padding-bottom:26px}
.strip div{border-left:2px solid var(--accent);padding-left:14px}
.strip b{display:block;font-family:'Lora',serif;font-size:24px;color:var(--ink);line-height:1.2}
.strip span{font-size:13.5px;color:var(--muted)}
@media(max-width:760px){.strip .wrap{grid-template-columns:1fr 1fr}}

/* sections */
section.block{padding:88px 0}
.head{max-width:720px;margin-bottom:44px}
.head h2{font-size:clamp(28px,3.4vw,38px);margin:10px 0 12px}
.head p{color:var(--muted);font-size:17px;margin:0}
.center{text-align:center;margin-left:auto;margin-right:auto}

/* product cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:stretch}
.card{background:#fff;border:1px solid var(--rule);border-radius:var(--radius);padding:26px 24px 24px;display:flex;flex-direction:column;position:relative}
.card.featured{border:2px solid var(--accent);box-shadow:0 20px 40px -24px rgba(22,34,58,.35)}
.badge{position:absolute;top:-13px;left:24px;background:var(--accent);color:#fff;font-size:11.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;padding:5px 11px;border-radius:999px}
.card .thumbs{display:flex;gap:10px;height:150px;margin-bottom:20px}
.card .thumbs img{height:150px;width:auto;border-radius:3px;box-shadow:0 10px 22px -10px rgba(22,34,58,.45)}
.card h3{font-size:22px;margin-bottom:4px}
.card .who{color:var(--muted);font-size:14.5px;margin-bottom:16px}
.card ul{list-style:none;padding:0;margin:0 0 22px;font-size:14.5px;flex:1}
.card li{padding:5px 0 5px 24px;position:relative}
.card li::before{content:"";position:absolute;left:2px;top:12px;width:11px;height:6px;border-left:2px solid var(--accent);border-bottom:2px solid var(--accent);transform:rotate(-45deg)}
.price{display:flex;align-items:baseline;gap:10px;margin-bottom:4px}
.price .was{color:var(--muted);text-decoration:line-through;font-size:18px}
.price .now{font-family:'Lora',serif;font-size:40px;color:var(--ink);font-weight:600;line-height:1}
.price .off{background:#fbeeea;color:var(--sale);font-size:12px;font-weight:700;padding:3px 8px;border-radius:999px;align-self:center}
.save{font-size:13.5px;color:var(--accent-d);font-weight:600;margin-bottom:16px;min-height:21px}
.card .btn{width:100%}
.card .fine{font-size:12.5px;color:var(--muted);text-align:center;margin-top:10px}
.ai-upgrade{margin-top:18px;padding:18px;border:1px solid #b9d8d1;border-radius:8px;background:var(--mint-soft)}
.ai-upgrade-head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:8px}
.ai-upgrade-head span{font-size:12px;letter-spacing:.12em;text-transform:uppercase;font-weight:700;color:var(--accent-d)}
.ai-upgrade-head b{font-family:'Lora',serif;font-size:28px;color:var(--ink)}
.ai-upgrade p{font-size:13.5px;color:var(--body);margin:0 0 13px}
.ai-upgrade small{display:block;text-align:center;color:var(--muted);font-size:11.5px;margin-top:8px}
.btn-ai{background:var(--ink);color:#fff;box-shadow:none}
.btn-ai:hover{background:var(--ink-2);transform:translateY(-1px)}
@media(max-width:900px){.cards{grid-template-columns:1fr;max-width:480px;margin:0 auto}}

/* AI companion */
.ai-section{background:#edf5f2;border-top:1px solid #d4e7e1;border-bottom:1px solid #d4e7e1}
.ai-intro{display:grid;grid-template-columns:.9fr 1.1fr;gap:52px;align-items:start}
.ai-feature-list{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.ai-feature-list div{background:#fff;border:1px solid #d4e7e1;border-radius:8px;padding:17px 18px}
.ai-feature-list b{display:block;color:var(--ink);font-size:15px;margin-bottom:4px}
.ai-feature-list span{display:block;color:var(--muted);font-size:13.5px;line-height:1.5}
.ai-note{margin-top:28px}
.ai-note p{margin:0;padding:15px 18px;border-left:3px solid var(--accent);background:#fff;border-radius:0 8px 8px 0;color:var(--body);font-size:13.5px}
@media(max-width:860px){.ai-intro{grid-template-columns:1fr}.ai-feature-list{grid-template-columns:1fr}}

/* compare */
.compare{background:var(--tint)}
.ctable{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--radius);overflow:hidden;border:1px solid var(--rule);font-size:15px}
.ctable th,.ctable td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--rule);vertical-align:top}
.ctable thead th{background:var(--ink);color:#fff;font-weight:600;font-size:14px}
.ctable tbody th{font-weight:600;color:var(--ink);width:24%}
.ctable tr:last-child td,.ctable tr:last-child th{border-bottom:0}
.tablewrap{overflow-x:auto}
.compare .after{margin-top:22px;color:var(--muted);font-size:15px}

/* inside */
.pages{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.pages figure{margin:0}
.pages img{border-radius:4px;box-shadow:0 14px 30px -14px rgba(22,34,58,.45);border:1px solid var(--rule);width:100%;aspect-ratio:8.5/11;object-fit:cover;object-position:top;background:#fff}
.pages figcaption{font-size:13.5px;color:var(--muted);margin-top:10px}
.pages figcaption b{color:var(--ink);display:block;font-size:14.5px}
@media(max-width:860px){.pages{grid-template-columns:1fr 1fr}}

.toc{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-top:64px}
.toc > div{border:1px solid var(--rule);border-radius:var(--radius);padding:26px 28px;background:#fff}
.toc h3{font-size:20px;margin-bottom:4px}
.toc .sub{color:var(--muted);font-size:14px;margin-bottom:16px}
.toc ol{margin:0;padding-left:22px;font-size:14.5px}
.toc li{padding:3px 0}
.toc li::marker{color:var(--accent);font-weight:600}
.toc .part{list-style:none;margin:14px 0 4px -22px;font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;font-weight:700;color:var(--accent)}
.toc .part:first-child{margin-top:0}
@media(max-width:860px){.toc{grid-template-columns:1fr}}

/* worksheets band */
.band{background:var(--ink);color:#c8d0dc}
.band .head h2{color:#fff}
.band .head p{color:#a9b5c6}
.band .kicker{color:var(--mint)}
.wgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.wgrid div{background:var(--ink-2);border:1px solid rgba(255,255,255,.07);border-radius:8px;padding:16px 18px}
.wgrid b{color:#fff;font-weight:600;display:block;font-size:15px}
.wgrid span{font-size:13.5px;color:#9eabbf}
.wgrid i{font-style:normal;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--mint);font-weight:700}
@media(max-width:860px){.wgrid{grid-template-columns:1fr}}

/* honest note */
.honest{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.honest .box{border-left:3px solid var(--gold);background:#fbf4e4;padding:22px 26px;border-radius:0 8px 8px 0}
.honest .box h3{font-size:19px;margin-bottom:8px}
.honest .box p{font-size:15px;margin:0}
@media(max-width:860px){.honest{grid-template-columns:1fr}}

/* faq */
.faq{max-width:820px}
.faq details{border-bottom:1px solid var(--rule);padding:4px 0}
.faq summary{cursor:pointer;list-style:none;padding:18px 36px 18px 0;font-weight:600;color:var(--ink);font-size:17px;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:4px;top:13px;font-size:24px;color:var(--accent);font-weight:400}
.faq details[open] summary::after{content:"\2013"}
.faq details p{color:var(--body);margin:0 0 18px;font-size:15.5px}

/* final cta */
.final{background:var(--accent-d);color:#e3f1ee;text-align:center}
.final h2{color:#fff;font-size:clamp(28px,3.6vw,40px);margin:8px 0 14px}
.final p{max-width:560px;margin:0 auto 26px;color:#cfe7e1}
.final .ctas{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.final .btn-ghost{box-shadow:inset 0 0 0 1.5px rgba(255,255,255,.5)}

footer{background:var(--ink);color:#8e9bb0;font-size:13.5px;padding:44px 0}
footer .wrap{display:grid;grid-template-columns:1fr 2fr;gap:40px}
footer .logo{font-size:19px}
footer p{margin:0 0 8px}
footer a{color:#c8d0dc}
.footer-links{margin-top:14px;font-size:13px}
@media(max-width:760px){footer .wrap{grid-template-columns:1fr}}

.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--sale);color:#fff;padding:12px 18px;border-radius:8px;font-size:14.5px;box-shadow:0 10px 30px rgba(0,0,0,.25);display:none;z-index:50;max-width:calc(100% - 32px)}

/* success page */
.order{min-height:70vh;padding:72px 0}
.order .panel{max-width:640px;margin:0 auto;background:#fff;border:1px solid var(--rule);border-radius:12px;padding:40px 40px 34px;box-shadow:0 20px 50px -30px rgba(22,34,58,.4)}
.order h1{font-size:32px;margin:10px 0 10px}
.order .muted{color:var(--muted)}
.dl{display:flex;align-items:center;justify-content:space-between;gap:16px;border:1px solid var(--rule);border-radius:8px;padding:16px 18px;margin:12px 0}
.dl b{color:var(--ink);font-weight:600;font-size:15px}
.dl span{display:block;font-size:13px;color:var(--muted)}
.tips{margin-top:26px;background:var(--mint-soft);border-left:3px solid var(--accent);padding:16px 20px;border-radius:0 8px 8px 0;font-size:14.5px}
.tips p{margin:0 0 6px}.tips p:last-child{margin:0}
.spinner{width:26px;height:26px;border:3px solid var(--rule);border-top-color:var(--accent);border-radius:50%;animation:spin 0.8s linear infinite;margin:20px 0}
@keyframes spin{to{transform:rotate(360deg)}}
@media(max-width:560px){.order .panel{padding:28px 22px}.dl{flex-direction:column;align-items:stretch}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.btn{transition:none}.spinner{animation-duration:2s}}
.nav ul a.btn{color:var(--ink)}
.nav ul a.btn:hover{color:var(--ink)}
.toc ol{list-style:none;padding-left:0;counter-reset:ch}
.toc li:not(.part){counter-increment:ch;padding-left:26px;position:relative}
.toc li:not(.part)::before{content:counter(ch) ".";position:absolute;left:0;color:var(--accent);font-weight:600}
.toc .part{margin:14px 0 4px 0}

.covers img{height:auto;aspect-ratio:8.5/11;object-fit:cover}

/* legal and policy pages */
.legal-hero{background:var(--ink);color:#c8d0dc;padding:62px 0 56px}
.legal-hero .kicker{color:var(--mint)}
.legal-hero h1{color:#fff;font-size:clamp(34px,5vw,52px);margin:10px 0 8px}
.legal-hero p{margin:0}
.legal-section{padding:64px 0 88px}
.legal-layout{display:grid;grid-template-columns:260px minmax(0,720px);gap:54px;align-items:start}
.legal-layout aside{background:var(--mint-soft);border-left:3px solid var(--accent);padding:20px 22px;border-radius:0 8px 8px 0;font-size:14px}
.legal-layout aside strong{display:block;color:var(--ink);font-size:15px;margin-bottom:6px}
.legal-layout aside p{margin:0}
.legal-copy h2{font-size:24px;margin:34px 0 10px}
.legal-copy h2:first-child{margin-top:0}
.legal-copy p,.legal-copy li{font-size:15.5px}
.legal-copy a{text-decoration:underline}
@media(max-width:780px){.legal-layout{grid-template-columns:1fr;gap:34px}}