/* Cinematic Battery Guide:  built from real HTML and individual assets. */
.seo-topic-links{display:flex;flex-wrap:wrap;gap:6px;margin-top:14px}
.seo-topic-links a{display:inline-flex;align-items:center;min-height:28px;padding:5px 8px;border:1px solid var(--border);border-radius:3px;color:var(--muted);font-size:12px;line-height:1.3;white-space:nowrap}
.seo-topic-links a:hover{color:var(--yellow);border-color:var(--yellow)}
.seo-topic-links-wrap{padding-block:20px;border-top:1px solid var(--border)}
.seo-topic-links-wrap .seo-topic-links{margin-top:0}
@font-face{font-family:Roboto;src:url('assets/fonts/roboto-regular.ttf') format('truetype');font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:Roboto;src:url('assets/fonts/roboto-bold.ttf') format('truetype');font-weight:600 900;font-style:normal;font-display:swap}
@font-face{font-family:'Roboto Condensed';src:url('assets/fonts/roboto-condensed-bold.ttf') format('truetype');font-weight:600 900;font-style:normal;font-display:swap}
:root{--yellow:#f1f51c;--dark:#050808;--paper:#090e0f;--text:#f7f8f7;--muted:#bcc3c4;--border:#424a4b;--display:Roboto,Arial,sans-serif;--body:Roboto,Arial,sans-serif;--header-height:clamp(56px,5.3vw,76px)}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-height) + 16px)}
body{margin:0;background:var(--dark);color:var(--text);font:16px/1.5 var(--body)}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer}
a,button,summary{touch-action:manipulation;-webkit-tap-highlight-color:transparent}
h1,h2,h3,p,figure{margin:0}
h1,h2,h3{font-family:var(--display);font-weight:700;line-height:1.08;letter-spacing:-.035em}
[hidden]{display:none!important}
.container{width:88%;max-width:1220px;margin-inline:auto}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--yellow);outline-offset:5px}
.site-header a:focus-visible,.site-header button:focus-visible,.purchase-banner a:focus-visible{outline-color:#646900}
.skip-link{position:fixed;top:8px;left:8px;z-index:100;padding:12px 18px;background:var(--yellow);color:#080b0a;transform:translateY(-170%)}
.skip-link:focus{transform:none}
.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
/* White header and the separate dark product bar from the reference. */
.site-header{position:sticky;top:0;z-index:20;background:#fff;color:#101513;border-bottom:1px solid #d7d9d7}
.header-inner{height:var(--header-height);display:flex;align-items:center;justify-content:space-between;gap:28px}
.brand{display:inline-flex;align-items:center;gap:12px;flex-shrink:0}
.brand img{width:clamp(31px,4vw,46px);height:auto}
.brand>span{font-family:'Roboto Condensed',Arial,sans-serif;font-size:clamp(22px,2.55vw,35px);font-weight:700;letter-spacing:-.025em;line-height:1}
.site-nav{display:flex;align-items:center;gap:clamp(24px,3vw,42px);font-size:clamp(12px,1.25vw,16px);margin-left:auto}
.site-nav>a{display:flex;align-items:center;min-height:44px}
.site-nav>a:hover,.site-nav>a[aria-current]{text-decoration:underline;text-underline-offset:5px}
.shopping-link{width:44px;height:44px;display:grid;place-items:center;border-left:1px solid #e7e9e7;padding-left:12px}
.shopping-link svg{width:24px;height:26px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.menu-toggle{display:none}
.product-bar{background:#020505;border-bottom:1px solid var(--border)}
.product-bar>.container{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:52px;padding-block:6px}
.product-bar p{display:flex;align-items:center;gap:12px;font-size:clamp(10px,1.1vw,14px);letter-spacing:.05em;color:#c9cfd0}
.product-bar strong{font-weight:700;color:#fff}
.product-bar p>span{color:#7e8787}
.button{display:inline-flex;align-items:center;justify-content:center;gap:12px;background:var(--yellow);color:#060a05;border:1px solid #e1e71e;border-radius:3px;min-height:48px;padding:12px 22px;font-size:clamp(15px,1.7vw,22px);font-weight:700;line-height:1.25;transition:background .15s}
.button:hover{background:#fbff5b}
.button svg,.preview-link svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.8;flex-shrink:0}
.button-small{min-height:38px;font-size:clamp(11px,1.2vw,16px);padding:8px 14px;gap:9px}
.button-small svg{width:18px;height:18px}
/* Product photography supplies the cinematic lighting; text stays HTML. */
.cinematic-hero{position:relative;isolation:isolate;background:#070c0d;overflow:hidden}
.hero-scene{position:absolute;inset:0;z-index:-1}
.hero-scene img{width:100%;height:100%;object-fit:cover;object-position:48% 50%}
.hero-inner{min-height:clamp(510px,58vw,820px);display:flex;align-items:center;padding-block:32px}
.hero-copy{width:44%;max-width:560px;position:relative}
.eyebrow{font-size:clamp(11px,1.3vw,17px);line-height:1.4;letter-spacing:.1em;margin-bottom:12px}
.hero-copy h1{font-size:clamp(38px,5.1vw,73px);line-height:1.01;letter-spacing:-.04em;text-shadow:0 2px 10px #0004}
.hero-copy h1>span,.feature-copy h2>span{color:var(--yellow)}
.hero-subtitle{font-size:clamp(14px,1.8vw,25px);line-height:1.35;margin-top:5px;letter-spacing:-.02em;white-space:nowrap}
.hero-description{font-size:clamp(12px,1.4vw,19px);line-height:1.45;color:#d0d5d6;margin-top:12px;max-width:40ch}
.format-row{list-style:none;display:flex;align-items:center;gap:0;padding:0;margin:16px 0 0;font-size:clamp(10px,1.1vw,15px)}
.format-row li{display:flex;align-items:center;gap:7px;white-space:nowrap;padding-inline:14px}
.format-row li:first-child{padding-left:0}
.format-row li+li{border-left:1px solid #667070}
.format-row svg{width:clamp(21px,2.4vw,30px);height:clamp(21px,2.4vw,30px);stroke:currentColor;stroke-width:1.5;fill:none;flex-shrink:0}
.hero-price{margin-top:20px}
.hero-price strong{font-size:clamp(42px,5.5vw,76px);font-weight:700;letter-spacing:-.035em;line-height:1.03}
.hero-price p{font-size:clamp(11px,1.25vw,17px);line-height:1.4;color:#d0d5d6;margin-top:3px}
.hero-button{width:84%;margin-top:11px}
.preview-link{display:flex;align-items:center;gap:14px;width:fit-content;min-height:34px;margin-top:7px;font-size:clamp(13px,1.5vw,20px);font-weight:700;text-decoration:underline;text-underline-offset:5px}
/* Three separate previews, followed by the four learning stages. */
.preview-section{background:#030606;padding-block:16px 24px}
.preview-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.preview-grid figure{min-width:0}
.preview-grid a{display:block;border:1px solid #667071;border-radius:4px;overflow:hidden;aspect-ratio:1.62;background:#111819;transition:border-color .15s}
.preview-grid a:hover{border-color:var(--yellow)}
.preview-grid img{width:100%;height:100%;object-fit:cover}
.preview-grid .preview-cover{object-position:73% center}
.preview-grid .preview-pages{object-position:72% center}
.preview-grid figcaption{text-align:center;font-size:clamp(12px,1.45vw,20px);line-height:1.4;margin-top:7px}
.learning-section-home{background:#030606;padding-top:22px}
.learning-heading{text-align:center;margin-bottom:27px}
.learning-heading h2{font-size:clamp(30px,3.65vw,51px)}
.learning-heading>p{font-size:clamp(14px,1.7vw,23px);color:#c7ced0;margin-top:9px}
.learning-steps{list-style:none;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));margin:0;padding:0}
.learning-steps li{padding-inline:clamp(20px,3vw,43px);min-width:0}
.learning-steps li:first-child{padding-left:4%}
.learning-steps li+li{border-left:1px solid #738080}
.learning-steps a{display:block}
.step-number{display:block;color:var(--yellow);font-size:clamp(31px,3.8vw,53px);font-weight:700;letter-spacing:-.04em;line-height:1.05}
.learning-steps h3{font-size:clamp(17px,1.85vw,26px);letter-spacing:-.025em;margin-top:6px}
.learning-steps p{color:#c6ccce;font-size:clamp(13px,1.5vw,20px);line-height:1.4;margin-top:8px}
.learning-steps a:hover h3{text-decoration:underline;text-underline-offset:4px}
.battery-stage{margin-top:12px;background:#030606}
.battery-stage img{width:100%;max-width:1600px;margin-inline:auto;height:auto}
/* The open spread and short introduction stay in their original positions. */
.inside-feature{position:relative;isolation:isolate;overflow:hidden;background:#070c0e}
.feature-scene{position:absolute;right:-5%;top:0;width:80%;height:100%;object-fit:cover;object-position:center;z-index:-1}
.feature-inner{min-height:clamp(275px,31vw,445px);display:flex;align-items:center;padding-block:32px}
.feature-copy{width:43%;max-width:570px}
.feature-copy h2{font-size:clamp(30px,4vw,57px);line-height:1.02;letter-spacing:-.035em}
.feature-copy>p{font-size:clamp(14px,1.7vw,23px);line-height:1.4;color:#d0d6d7;margin-top:15px}
.inside-link{display:inline-flex;align-items:center;gap:14px;min-height:44px;margin-top:12px;font-size:clamp(11px,1.25vw,17px)}
.inside-link::before{content:'';width:37px;height:2px;background:var(--yellow)}
.inside-link:hover{text-decoration:underline;text-underline-offset:4px}
.benefit-strip{background:#1a2325;padding-block:16px 11px}
.benefits{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));padding-block:4px 17px;gap:0}
.benefits>div{display:flex;align-items:center;justify-content:center;gap:13px;padding-inline:16px;min-width:0}
.benefits>div+div{border-left:1px solid #485456}
.benefits p{font-size:clamp(11px,1.2vw,16px);line-height:1.4}
.checkmark{display:grid;place-items:center;width:27px;height:27px;background:var(--yellow);border-radius:50%;font-size:18px;font-weight:700;color:#090e08;flex-shrink:0}
.safety-note{text-align:center;color:#c3ccce;border-top:1px solid #637074;padding-top:9px;font-size:clamp(10px,1.12vw,15px);line-height:1.4}
.reading-buy-info{background:#030606;padding-block:24px}
.info-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:3%}
.info-grid h2{font-size:clamp(21px,2.4vw,33px);letter-spacing:-.025em;margin-bottom:15px}
.reading-specs{padding-right:6%}
.reading-specs dl{margin:0}
.reading-specs dl>div{display:grid;grid-template-columns:1fr 1.75fr;gap:16px;border-top:1px solid var(--border);padding-block:8px;font-size:clamp(12px,1.35vw,18px);line-height:1.4}
.reading-specs dt{font-weight:700}
.reading-specs dd{margin:0;color:#d0d6d7}
.before-buy{border-left:1px solid #566165;padding-left:6%;min-width:0}
details>summary{list-style:none;cursor:pointer}
details>summary::-webkit-details-marker{display:none}
.faq-item{border-bottom:1px solid var(--border);padding-bottom:10px}
.faq-item+ .faq-item{margin-top:10px}
.faq-item summary,.more-faq>summary{display:flex;align-items:center;justify-content:space-between;gap:15px;font-size:clamp(12px,1.35vw,18px);font-weight:700;line-height:1.4;min-height:28px}
.faq-item summary>span,.more-faq>summary>span{font-weight:400;font-size:21px;flex-shrink:0}
details[open]>summary>span{font-size:0}
details[open]>summary>span::after{content:'−';font-size:21px}
.faq-item p{font-size:clamp(11px,1.25vw,17px);line-height:1.45;color:#c3ccce;margin-top:3px}
.more-faq{margin-top:8px}
.more-faq>summary{font-size:clamp(11px,1.15vw,16px);color:#b7c2c5;font-weight:400}
.more-faq>div{padding-top:12px}
/* Pale final purchase banner, with the independently generated scene. */
.purchase-banner{position:relative;isolation:isolate;background:#d2d4d7;color:#050909;overflow:hidden}
.purchase-scene{position:absolute;top:0;left:0;width:57%;height:100%;object-fit:cover;object-position:left center;z-index:-1}
.purchase-inner{min-height:clamp(215px,22vw,320px);display:flex;align-items:center;justify-content:flex-end;padding-block:26px}
.purchase-copy{width:48%;min-width:0}
.purchase-copy h2{font-size:clamp(23px,2.55vw,36px);font-family:'Roboto Condensed',Arial,sans-serif;letter-spacing:-.02em;line-height:1.15}
.purchase-row{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-top:15px}
.final-price{font-size:clamp(48px,6vw,84px);font-weight:700;line-height:1;letter-spacing:-.045em}
.purchase-row>.button{font-size:clamp(14px,1.45vw,20px);padding-inline:clamp(18px,2.3vw,32px);white-space:nowrap}
.purchase-status{font-size:12px;line-height:1.5;margin-top:12px;padding:9px 12px;background:#fff;border-left:3px solid #6d7400}
.site-footer{background:#0c1315;padding-block:25px 20px}
.footer-top{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px;padding-bottom:24px}
.footer-brand .brand img{width:35px}
.footer-brand .brand>span{font-size:clamp(18px,2vw,28px)}
.footer-brand>p{font-size:clamp(11px,1.2vw,16px);color:#c7ced0;margin:5px 0 0 47px}
.footer-top nav{display:flex;align-items:flex-start;flex-direction:column;gap:4px;font-size:clamp(11px,1.2vw,16px);line-height:1.4;color:#ced5d6}
.footer-top nav h2{font-family:var(--body);font-size:inherit;letter-spacing:0;line-height:1.4;color:#fff;margin-bottom:3px}
.footer-top nav a:hover{color:var(--yellow)}
.footer-bottom{display:flex;justify-content:space-between;gap:24px;border-top:1px solid #697476;padding-top:14px;font-size:clamp(10px,1.1vw,15px);color:#bfc7c9}
/* Shared editorial pages keep all existing content with the new dark theme. */
.editorial-intro{background:#10191c;padding-block:48px;border-bottom:1px solid var(--border)}
.editorial-intro h1{font-size:clamp(39px,4.8vw,66px);max-width:980px}
.editorial-intro .eyebrow{color:var(--yellow)}
.editorial-intro p:last-child{font-size:16px;line-height:1.65;max-width:65ch;color:var(--muted);margin-top:20px}
.blog-content{padding-block:40px}
.article-index{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:0 35px;margin:0 0 30px;padding:0}
.article-index li{border-bottom:1px solid var(--border)}
.article-index a{display:grid;grid-template-columns:35px minmax(0,1fr) 20px;gap:12px;padding:23px 0}
.index-number{font-size:24px;font-weight:700;color:var(--yellow);line-height:1.15}
.article-index h2{font-size:25px;letter-spacing:-.025em}
.article-index p{font-size:14px;color:var(--muted);line-height:1.5;margin-top:8px}
.article-index a:hover h2{text-decoration:underline;text-underline-offset:4px}
.blog-articles{max-width:850px}
.blog-article{border-bottom:1px solid var(--border);padding:35px 0}
.blog-article h2{font-size:34px;margin-bottom:20px}
.blog-article>img{width:100%;max-height:380px;object-fit:cover;margin-bottom:20px}
.blog-article p{line-height:1.7;margin-top:15px}
.source-link{font-size:13px;color:var(--muted)}
.source-link a,.support-content a{text-decoration:underline;text-underline-offset:3px}
.back-to-top{display:inline-block;min-height:40px;font-size:13px;margin-top:20px;padding-block:8px;text-decoration:underline;text-underline-offset:4px}
.support-wrap{padding-bottom:50px}
.support-content{max-width:850px;margin-right:auto}
.support-content section{padding:35px 0;border-bottom:1px solid var(--border)}
.support-content h2{font-size:30px;margin-bottom:16px}
.support-content p{line-height:1.7;margin-top:14px}
.section-number{display:inline-block;background:var(--yellow);color:#050909;font-weight:700;font-size:16px;line-height:1.5;padding:2px 8px}
/* Dedicated handbook: editorial sections in the existing palette. */
.reading-intro{padding-block:clamp(35px,5vw,70px);border-bottom:1px solid var(--border)}
.reading-intro .eyebrow{color:var(--muted);margin-bottom:12px}
.reading-intro h1{font-size:clamp(34px,4.5vw,64px);line-height:1.03;letter-spacing:-.035em;margin-bottom:22px}
.reading-intro>.container>p:not(.eyebrow){font-size:clamp(16px,1.4vw,19px);line-height:1.7;max-width:78ch;margin-top:14px}
.reading-nav{display:grid;grid-template-columns:1fr 1fr;gap:0 35px;margin-top:28px}
.reading-nav a{display:flex;align-items:center;gap:14px;min-width:0;border-top:1px solid var(--border);padding:16px 0;font-family:var(--display);font-weight:700;font-size:clamp(16px,1.5vw,21px);line-height:1.25}
.reading-nav a>span:first-child{color:var(--yellow);font-size:1.2em;min-width:25px}
.reading-nav a>span:last-child{margin-left:auto;font-family:var(--body);font-weight:400}
.reading-nav a:hover{color:var(--yellow)}
.learning-section{padding-block:clamp(35px,4.5vw,65px);border-bottom:1px solid var(--border);scroll-margin-top:calc(var(--header-height) + 16px)}
.learning-section:nth-of-type(even){background:#111819}
.chapter-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,2.2fr);gap:6%}
.chapter-heading{min-width:0;align-self:start}
.chapter-heading h2{font-size:clamp(28px,3vw,43px);line-height:1.08;letter-spacing:-.025em;margin-top:5px}
.chapter-heading>p{font-size:clamp(14px,1.25vw,17px);line-height:1.5;margin-top:15px;color:var(--muted)}
.chapter-heading>img{width:100%;height:auto;aspect-ratio:4/3;object-fit:cover;margin-top:24px;border:1px solid var(--border)}
.chapter-body{min-width:0;font-size:clamp(16px,1.3vw,18px);line-height:1.75;max-width:76ch}
.chapter-body h3{font-size:clamp(23px,2.1vw,30px);line-height:1.15;letter-spacing:-.015em;margin-bottom:14px}
.chapter-body h3:not(:first-child){margin-top:30px}
.chapter-body>p+p{margin-top:17px}
.reference-link{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.reference-link:hover{color:var(--yellow)}
.chapter-takeaway{border-left:4px solid #d8df12;margin-top:25px;padding:3px 0 3px 20px}
.chapter-takeaway>strong{font-family:var(--display);font-size:21px;line-height:1.2}
.chapter-takeaway>p{font-size:15px;line-height:1.65;margin-top:7px}
.decision-notes{margin:25px 0 0}
.decision-notes>div{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,2fr);gap:20px;border-top:1px solid var(--border);padding-block:15px}
.decision-notes dt{font-family:var(--display);font-weight:700;font-size:19px;line-height:1.25}
.decision-notes dd{margin:0;font-size:15px;line-height:1.55}
.guide-reading-section .chapter-heading>img{aspect-ratio:auto;max-width:220px;border:0;object-fit:contain;margin-inline:auto}
@media(max-width:700px){
  .reading-intro{padding-block:32px}
  .reading-intro h1{font-size:35px}
  .reading-intro>.container>p:not(.eyebrow){font-size:16px;line-height:1.7}
  .reading-nav{grid-template-columns:1fr;margin-top:23px}
  .reading-nav a{font-size:18px;padding-block:14px}
  .chapter-layout{grid-template-columns:1fr;gap:25px}
  .chapter-heading h2{font-size:32px;max-width:20ch}
  .chapter-heading>p{font-size:15px;margin-top:10px}
  .chapter-heading>img{aspect-ratio:1.7;max-height:240px;margin-top:20px}
  .chapter-body{font-size:16px;line-height:1.75}
  .chapter-body h3{font-size:25px}
  .chapter-takeaway{padding-left:16px}
  .decision-notes>div{grid-template-columns:1fr;gap:7px}
  .guide-reading-section .chapter-heading>img{max-width:175px;max-height:none}
}
@media print{
  .reading-nav{display:none}
  .learning-section{break-inside:auto;background:#fff}
  .chapter-layout{grid-template-columns:1fr;gap:20px}
  .chapter-heading>img{display:none}
  .chapter-body{max-width:none}
}



.reading-intro{background:#10191c}
.reading-intro h1{font-size:clamp(39px,4.8vw,66px)}
.handbook-back{margin-top:0;margin-bottom:22px}
.handbook-end{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-block:30px}
@media(max-width:1050px){
 .format-row li{padding-inline:10px;gap:5px}
 .hero-subtitle{font-size:clamp(14px,1.7vw,18px)}
 .hero-button{width:88%}
 .purchase-row{gap:16px}
 .purchase-row>.button{padding-inline:16px}
}
@media(max-width:700px){
 :root{--header-height:60px}
 .container{width:calc(100% - 36px)}
 .header-inner{gap:14px}
 .brand{gap:9px}.brand img{width:32px}.brand>span{font-size:23px}
 .shopping-link{margin-left:auto;border-left:0;padding-left:0}
 .menu-toggle{display:flex;order:3;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;border:0;background:transparent;color:#101513;padding:11px}
 .menu-toggle span{display:block;width:100%;height:2px;background:currentColor;transition:transform .15s,opacity .15s}
 .menu-toggle[aria-expanded=true] span:nth-child(1){transform:translateY(7px) rotate(45deg)}.menu-toggle[aria-expanded=true] span:nth-child(2){opacity:0}.menu-toggle[aria-expanded=true] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
 .site-nav{display:none;position:absolute;top:var(--header-height);left:0;right:0;background:#fff;color:#101513;border-bottom:1px solid #b8c0c1;padding:12px 18px 22px;margin:0;flex-direction:column;align-items:stretch;gap:0;font-size:16px}
 .site-nav.is-open{display:flex}.site-nav>a{padding:10px 0}
 .product-bar>.container{min-height:50px;gap:10px}.product-bar p{font-size:9px;gap:7px}.product-bar .button{font-size:11px;padding-inline:10px;gap:6px;min-height:36px}.product-bar .button svg{width:16px;height:16px}
 .cinematic-hero{display:flex;flex-direction:column}
 .hero-inner{order:1;min-height:0;padding-block:28px 8px}
 .hero-copy{width:100%;max-width:500px}
 .eyebrow{font-size:11px;margin-bottom:12px}
 .hero-copy h1{font-size:clamp(38px,10vw,57px);line-height:1.02}
 .hero-subtitle{font-size:15px;white-space:normal;line-height:1.4;margin-top:9px;max-width:38ch}
 .hero-description{font-size:14px;max-width:40ch;margin-top:13px;line-height:1.5}
 .format-row{font-size:10px;margin-top:16px}.format-row li{padding-inline:10px;gap:6px}.format-row svg{width:21px;height:21px}
 .hero-price{margin-top:20px}.hero-price strong{font-size:44px}.hero-price p{font-size:12px}
 .hero-button{width:100%;max-width:380px;font-size:16px;min-height:48px;margin-top:12px}
 .preview-link{font-size:14px;min-height:40px;margin-top:8px}
 .hero-scene{order:2;display:block;position:relative;inset:auto;z-index:0;aspect-ratio:1.3;margin-top:5px}.hero-scene img{width:100%;height:100%;object-position:right center}
 .preview-section{padding-block:17px 20px}.preview-grid{gap:10px}.preview-grid a{aspect-ratio:1.1}.preview-grid figcaption{font-size:11px;margin-top:7px}.preview-grid .preview-cover{object-position:71% center}.preview-grid .preview-pages{object-position:70% center}
 .learning-section-home{padding-top:20px}.learning-heading{margin-bottom:24px}.learning-heading h2{font-size:29px}.learning-heading>p{font-size:14px;line-height:1.5;margin-top:8px}
 .learning-steps{grid-template-columns:1fr 1fr;gap:24px 0}.learning-steps li{padding-inline:21px}.learning-steps li:nth-child(odd){padding-left:5px;border-left:0}.learning-steps li:nth-child(even){border-left:1px solid #738080}.step-number{font-size:33px}.learning-steps h3{font-size:19px;margin-top:5px}.learning-steps p{font-size:14px;line-height:1.45;margin-top:6px}
 .battery-stage{margin-top:22px}.battery-stage img{width:100%;aspect-ratio:1.65;object-fit:cover;object-position:center}
 .inside-feature{display:flex;flex-direction:column}.feature-inner{order:1;min-height:0;padding-block:28px 0}.feature-copy{width:100%;max-width:500px}.feature-copy h2{font-size:34px}.feature-copy>p{font-size:15px;margin-top:13px}.inside-link{font-size:13px;margin-top:10px}
 .feature-scene{order:2;position:relative;top:auto;right:auto;width:100%;height:auto;aspect-ratio:1.4;object-fit:cover;object-position:right center;z-index:0;margin-top:7px}
 .benefit-strip{padding-block:15px 12px}.benefits{padding-bottom:14px}.benefits>div{flex-direction:column;gap:8px;padding-inline:8px;text-align:center}.benefits p{font-size:11px}.checkmark{width:25px;height:25px;font-size:17px}.safety-note{font-size:10px;line-height:1.5;padding-top:11px}
 .reading-buy-info{padding-block:28px}.info-grid{grid-template-columns:1fr;gap:27px}.info-grid h2{font-size:24px;margin-bottom:15px}.reading-specs{padding:0}.reading-specs dl>div{font-size:14px;padding-block:9px}.before-buy{border-left:0;padding-left:0}.faq-item summary{font-size:14px;min-height:36px}.faq-item p{font-size:13px;margin-top:3px}.more-faq>summary{font-size:13px;min-height:40px}
 .purchase-banner{display:flex;flex-direction:column}.purchase-scene{order:1;position:relative;top:auto;left:auto;width:100%;height:auto;aspect-ratio:1.6;object-fit:cover;object-position:left center;z-index:0}
 .purchase-inner{order:2;min-height:0;padding-block:25px 30px}.purchase-copy{width:100%}.purchase-copy h2{font-size:26px}.purchase-row{gap:15px;margin-top:17px}.final-price{font-size:51px}.purchase-row>.button{font-size:14px;min-height:48px;padding-inline:20px}.purchase-status{font-size:12px}
 .site-footer{padding-block:28px 22px}.footer-top{grid-template-columns:1fr 1fr;gap:24px 20px;padding-bottom:25px}.footer-brand{grid-column:1/-1}.footer-brand .brand>span{font-size:22px}.footer-brand .brand img{width:32px}.footer-brand>p{font-size:12px;margin-left:44px}.footer-top nav{font-size:13px;gap:7px}.footer-bottom{flex-direction:column;gap:8px;font-size:11px;padding-top:15px}
 .editorial-intro{padding-block:32px}.editorial-intro h1{font-size:38px}.editorial-intro p:last-child{font-size:15px}.blog-content{padding-block:26px}.article-index{grid-template-columns:1fr;gap:0}.article-index h2{font-size:23px}.article-index a{padding-block:22px}.blog-article{padding-block:28px}.blog-article h2{font-size:29px}.blog-article p{font-size:15px}.support-content h2{font-size:27px}.support-content p{font-size:15px}.reading-intro h1{font-size:38px}.handbook-end{flex-wrap:wrap}
}
@media(max-width:380px){.container{width:calc(100% - 32px)}.header-inner{gap:8px}.brand>span{font-size:20px}.brand img{width:30px}.hero-copy h1{font-size:37px}.format-row li{padding-inline:8px;gap:5px}.format-row{font-size:9px}.purchase-row>.button{padding-inline:14px;font-size:13px}.final-price{font-size:47px}}
/* Workshop motion: short assembly sequences, tactile controls and fine linework.
   Content is never hidden by CSS, including when JavaScript is unavailable. */
:root{--motion-ease:cubic-bezier(.22,1,.36,1)}
.button{position:relative;isolation:isolate;overflow:hidden;transition:background 180ms,box-shadow 300ms,transform 300ms var(--motion-ease)}
.button::after{content:'';position:absolute;inset:-60% -40%;z-index:-1;pointer-events:none;background:linear-gradient(110deg,transparent 42%,#fff5 50%,transparent 58%);transform:translateX(-80%);transition:transform 650ms var(--motion-ease)}
.button svg,.preview-link svg{transition:transform 300ms var(--motion-ease)}
.button:active{transform:translateY(1px);box-shadow:inset 0 2px 5px #0002}
.button:focus-visible svg,.preview-link:focus-visible svg{transform:translateX(3px)}
.site-nav>a{position:relative;text-decoration:none!important}
.site-nav>a::after{content:'';position:absolute;bottom:8px;left:0;right:0;height:2px;background:#101513;transform:scaleX(0);transform-origin:left;transition:transform 260ms var(--motion-ease)}
.site-nav>a[aria-current]::after,.site-nav>a:focus-visible::after{transform:scaleX(1)}
.shopping-link svg{transition:transform 280ms var(--motion-ease)}
.preview-grid a{position:relative;transition:border-color 250ms,box-shadow 350ms,transform 350ms var(--motion-ease)}
.preview-grid a::before{content:'';position:absolute;top:10px;left:10px;width:16px;height:16px;border-top:1px solid var(--yellow);border-left:1px solid var(--yellow);opacity:.6;z-index:1;pointer-events:none;transition:width 300ms,height 300ms,opacity 300ms}
.preview-grid a::after{content:'';position:absolute;inset:0;background:radial-gradient(circle at var(--light-x,50%) var(--light-y,50%),#fff2,transparent 65%);opacity:0;pointer-events:none;transition:opacity 250ms}
.preview-grid a.is-tilting{transform:perspective(900px) rotateX(var(--tilt-x,0deg)) rotateY(var(--tilt-y,0deg)) translateY(-3px)}
.preview-grid a.is-tilting::after{opacity:1}
.learning-steps a{position:relative;transition:transform 300ms var(--motion-ease)}
.learning-steps a::after{content:'';position:absolute;top:5px;right:8px;width:9px;height:9px;border-top:1px solid #667272;border-right:1px solid #667272;transition:border-color 250ms,transform 300ms var(--motion-ease)}
.step-number{transition:text-shadow 300ms}
.inside-link::before{transform-origin:left;transition:transform 300ms var(--motion-ease)}
.battery-stage{position:relative;overflow:hidden;isolation:isolate}
.mechanical-overlay{position:absolute;inset:0;width:100%;height:100%;color:var(--yellow);opacity:.3;pointer-events:none}
.dimension-line{opacity:.55}
.calibration-ring{opacity:.7}
.terminal-points{opacity:.8}
@media(prefers-reduced-motion:no-preference){
 .is-assembled .assembly-lines path{animation:assemble-line 1500ms var(--motion-ease) 150ms backwards}
 .is-assembled .calibration-ring>*{transform-box:fill-box;transform-origin:center;animation:calibrate-ring 1800ms var(--motion-ease) 200ms backwards}
 .is-assembled .ring-right>*{animation-direction:reverse}
 .is-assembled .terminal-points{animation:connect-points 900ms var(--motion-ease) 600ms backwards}
 .site-nav.is-open{animation:menu-arrive 220ms var(--motion-ease)}
}
@media(hover:hover) and (pointer:fine){
 .button:hover{transform:translateY(-2px);box-shadow:0 5px 22px #eff51c20}
 .button:hover::after{transform:translateX(80%)}
 .button:hover svg,.preview-link:hover svg{transform:translateX(4px)}
 .button:active{transform:translateY(1px)}
 .site-nav>a:hover::after{transform:scaleX(1)}
 .shopping-link:hover svg{transform:translateY(-2px) rotate(-4deg)}
 .preview-grid a:hover{box-shadow:0 8px 28px #0006;transform:translateY(-3px)}
 .preview-grid a.is-tilting:hover{transform:perspective(900px) rotateX(var(--tilt-x,0deg)) rotateY(var(--tilt-y,0deg)) translateY(-3px)}
 .preview-grid a:hover::before{width:24px;height:24px;opacity:1}
 .learning-steps a:hover{transform:translateY(-3px)}
 .learning-steps a:hover::after{border-color:var(--yellow);transform:translate(2px,-2px)}
 .learning-steps a:hover .step-number{text-shadow:0 0 20px #f1f51c30}
 .inside-link:hover::before{transform:scaleX(1.25)}
}
@keyframes assemble-line{from{stroke-dasharray:1;stroke-dashoffset:1}to{stroke-dasharray:1;stroke-dashoffset:0}}
@keyframes calibrate-ring{from{transform:rotate(-70deg);opacity:.2}to{transform:rotate(0);opacity:1}}
@keyframes connect-points{from{opacity:0}to{opacity:.8}}
@keyframes menu-arrive{from{opacity:.5;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}
.motion-paused .mechanical-overlay *{animation-play-state:paused!important}
@media(max-width:700px){.mechanical-overlay{opacity:.2}.calibration-ring{display:none}.dimension-line{display:none}.preview-grid a::before{top:7px;left:7px;width:10px;height:10px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}.button,.button svg,.preview-link svg,.shopping-link svg,.preview-grid a,.learning-steps a,.learning-steps a::after,.inside-link::before{transform:none!important}.preview-grid a::after,.button::after{display:none}}
@media print{.mechanical-overlay{display:none}*{animation:none!important;transition:none!important}}
@media print{.site-header,.product-bar,.site-footer,.button,.hero-scene{display:none!important}body{background:#fff;color:#111}.container{width:95%}.hero-inner{min-height:0}.hero-copy{width:100%}.hero-copy h1>span,.step-number,.feature-copy h2>span{color:#111}.hero-subtitle{white-space:normal}.cinematic-hero,.preview-section,.learning-section-home,.inside-feature,.benefit-strip,.reading-buy-info,.purchase-banner{background:#fff;color:#111}.info-grid{grid-template-columns:1fr}.before-buy{padding:0;border:0}.purchase-inner{min-height:0}.purchase-copy{width:100%}.feature-scene,.purchase-scene{display:none}.feature-inner{min-height:0}.feature-copy{width:100%}}

/* Dedicated product, preview, FAQ and purchase pages share the cinematic theme. */
.site-nav{gap:clamp(14px,1.8vw,26px)}
.site-nav .nav-purchase{gap:7px;font-weight:700;border-left:1px solid #d8deda;padding-left:15px}
.nav-purchase svg{width:20px;height:23px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}
.page-intro-copy h1,.purchase-heading h1{font-size:clamp(38px,4.8vw,67px);line-height:1.04;letter-spacing:-.04em}
.page-intro-copy .eyebrow,.purchase-heading .eyebrow,.page-section-heading .eyebrow,.faq-groups .eyebrow,.sample-copy .eyebrow{color:var(--yellow)}
.page-lead{font-size:clamp(20px,2.2vw,29px);font-weight:700;line-height:1.3;margin-top:24px}
.page-description{font-size:clamp(15px,1.35vw,19px);line-height:1.65;color:var(--muted);max-width:58ch;margin-top:18px}
.page-actions{display:flex;align-items:center;flex-wrap:wrap;gap:18px 24px;margin-top:26px}
.page-actions .button{font-size:clamp(15px,1.4vw,20px)}
.text-link{display:inline-flex;align-items:center;gap:9px;min-height:44px;font-size:14px;font-weight:700;text-decoration:underline;text-underline-offset:5px;text-decoration-color:#788485}
.text-link:hover{color:var(--yellow);text-decoration-color:currentColor}
.edition-note{font-size:12px;color:#b6c1c1;margin-top:18px}
.product-intro{background:radial-gradient(ellipse at 80% 45%,#1b2526,#070c0d 65%);border-bottom:1px solid #263031}
.product-intro-grid{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:5%;padding-block:clamp(36px,5vw,72px)}
.product-intro-art{min-width:0;border:1px solid #303c3d;border-radius:5px;overflow:hidden;background:#0a1112}
.product-intro-art img{width:100%;aspect-ratio:1;object-fit:cover;object-position:75% center}
.product-intro-art figcaption{font-size:12px;text-align:center;color:var(--muted);padding:12px}
.page-section{padding-block:clamp(38px,5vw,72px);border-bottom:1px solid #263031}
.page-section-heading{margin-bottom:30px}
.page-section h2,.page-cta h2{font-size:clamp(29px,3.3vw,45px);line-height:1.08}
.chapter-cards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px}
.chapter-cards article{padding-top:22px;border-top:1px solid #596465;min-width:0}
.chapter-cards h3{font-size:24px;margin-top:12px}
.chapter-cards p{font-size:15px;line-height:1.65;color:var(--muted);margin-top:13px}
.chapter-cards .text-link{font-size:12px;margin-top:13px;line-height:1.5}
.page-section-tinted{background:#10191b}
.editorial-split{display:grid;grid-template-columns:1.2fr 1fr;gap:8%;align-items:center}
.scope-note{border-left:2px solid var(--yellow);padding:4px 0 4px 24px}
.scope-note h3{font-size:23px;line-height:1.2;letter-spacing:-.02em}
.scope-note p{color:var(--muted);font-size:15px;line-height:1.65;margin-top:12px}
.scope-note .text-link{margin-top:12px}
.page-cta{background:#d2d4d7;color:#070c0d;padding-block:42px}
.page-cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px}
.page-cta h2{font-size:clamp(27px,3vw,40px)}
.page-cta p:not(.eyebrow){font-size:15px;line-height:1.5;margin-top:12px;color:#3d4748}
.page-cta .eyebrow{font-size:11px;letter-spacing:.08em}
.page-cta .button{font-size:17px;flex-shrink:0}
.inside-intro{background:radial-gradient(ellipse at 65% 70%,#1c2729,#060b0c 70%);padding-block:clamp(36px,5vw,65px) 24px}
.inside-intro .page-intro-copy{max-width:760px}
.spread-preview{margin-top:34px}
.spread-preview>a{display:block;overflow:hidden;border:1px solid #3b4748;border-radius:5px}
.spread-preview img{width:100%;aspect-ratio:1.9;object-fit:cover}
.spread-preview figcaption{display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap;font-size:12px;color:var(--muted);margin-top:10px}
.spread-preview .text-link{font-size:12px;min-height:32px}
.contents-grid{display:grid;grid-template-columns:1fr 1.25fr;gap:10%;align-items:start}
.contents-grid .page-section-heading{margin:0}
.contents-grid .text-link{margin-top:20px}
.contents-list{list-style:none;padding:0;margin:0}
.contents-list li{display:grid;grid-template-columns:58px 1fr;gap:22px;padding:25px 0;border-top:1px solid #485657}
.contents-list li:first-child{padding-top:0;border-top:0}
.contents-list h3{font-size:23px;line-height:1.2}
.contents-list p{font-size:15px;line-height:1.6;color:var(--muted);margin-top:9px}
.contents-list .step-number{font-size:35px}
.sample-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:7%;align-items:center}
.sample-grid>img{width:100%;aspect-ratio:1.3;object-fit:cover;border-radius:5px;border:1px solid #354345}
.simple-checklist{list-style:none;padding:0;margin:22px 0 0}
.simple-checklist li{position:relative;padding-left:25px;font-size:15px;line-height:1.5}
.simple-checklist li+li{margin-top:12px}
.simple-checklist li::before{content:'✓';position:absolute;left:0;top:0;color:var(--yellow);font-weight:700}
.faq-page-grid{display:grid;grid-template-columns:1fr 2fr;gap:9%;align-items:start}
.faq-side h2{font-size:26px}
.faq-topic-nav{display:flex;flex-direction:column;margin-top:20px}
.faq-topic-nav a{display:flex;justify-content:space-between;gap:20px;font-size:15px;padding-block:15px;border-bottom:1px solid #424f50}
.faq-topic-nav a:hover{color:var(--yellow)}
.faq-side>p{color:var(--muted);font-size:14px;margin-top:28px}
.faq-side .text-link{font-size:13px}
.faq-groups>section{scroll-margin-top:calc(var(--header-height) + 24px)}
.faq-groups>section+section{margin-top:42px}
.faq-groups h2{font-size:30px;margin-bottom:22px}
.faq-groups .eyebrow{font-size:11px}
.faq-groups .faq-item{padding-bottom:16px}
.faq-groups .faq-item+.faq-item{margin-top:14px}
.faq-groups .faq-item summary{font-size:17px;min-height:44px}
.faq-groups .faq-item p{font-size:15px;line-height:1.65;margin-top:8px;padding-right:26px}
.faq-groups .scope-note{margin-top:38px}
.all-faq-link{display:inline-flex;gap:8px;align-items:center;min-height:32px;margin:-8px 0 14px;font-size:12px;color:var(--muted);text-decoration:underline;text-underline-offset:4px}
.all-faq-link:hover{color:var(--yellow)}
.replacement-resources{margin-top:20px}
.replacement-resources h3{font-size:15px;margin:0 0 8px}
.replacement-resources>div{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 14px}
.replacement-resources a{display:flex;align-items:center;justify-content:space-between;gap:8px;min-height:44px;padding:6px 0;border-top:1px solid var(--border);font-size:13px;line-height:1.5;text-decoration:underline;text-underline-offset:4px}
.replacement-resources a:hover{color:var(--yellow)}
.replacement-resources a span{flex-shrink:0;color:var(--yellow)}
@media(max-width:400px){.replacement-resources>div{grid-template-columns:1fr}}
.purchase-landing{background:radial-gradient(ellipse at 20% 25%,#202c2e,#080d0e 60%);padding-block:clamp(36px,5vw,68px)}
.purchase-heading{margin-bottom:32px}
.purchase-heading h1{max-width:850px}
.purchase-heading>p:not(.eyebrow){font-size:clamp(16px,1.6vw,21px);margin-top:17px;color:var(--muted)}
.purchase-layout{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:5%;align-items:start}
.purchase-visual>figure{border:1px solid #3a484a;border-radius:5px;overflow:hidden;background:#071011}
.purchase-visual>figure img{width:100%;aspect-ratio:1.12;object-fit:cover;object-position:75% center}
.purchase-visual figcaption{font-size:12px;line-height:1.5;color:var(--muted);text-align:center;padding:13px}
.purchase-mini-previews{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:18px}
.purchase-mini-previews>a{display:block;border:1px solid #3a484a;border-radius:4px;overflow:hidden;background:#0d1719}
.purchase-mini-previews img{width:100%;aspect-ratio:1.5;object-fit:cover;object-position:70% center}
.purchase-mini-previews>a>span{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:13px;padding:13px}
.purchase-mini-previews a:hover{border-color:var(--yellow)}
.order-card{padding:clamp(24px,3vw,40px);border:1px solid #526061;background:#111c1e;border-radius:6px;scroll-margin-top:calc(var(--header-height) + 20px);min-width:0;box-shadow:0 18px 60px #0003}
.order-card .eyebrow{color:var(--yellow);font-size:11px}
.order-card h2{font-size:clamp(27px,2.7vw,37px);line-height:1.1}
.order-subtitle{font-size:14px;line-height:1.5;color:var(--muted);margin-top:13px}
.order-price{margin-block:25px;display:flex;flex-direction:column;gap:7px}
.order-price strong{font-size:clamp(47px,5vw,64px);line-height:1;letter-spacing:-.04em}
.order-price>span{font-size:12px;color:var(--muted)}
.order-specs{margin:0 0 26px}
.order-specs>div{display:grid;grid-template-columns:1fr 1.6fr;gap:16px;border-top:1px solid #425153;padding-block:10px;font-size:14px;line-height:1.5}
.order-specs dt{font-weight:700}
.order-specs dd{margin:0;color:#c6cfd0}
.order-card h3{font-size:19px;letter-spacing:-.015em}
.order-card .simple-checklist{margin-top:16px}
.order-card .simple-checklist li{font-size:14px}
.checkout-button{width:100%;font-size:17px;margin-top:27px}
.checkout-note{font-size:12px;line-height:1.6;color:var(--muted);margin-top:13px;text-align:center}
.checkout-status{display:none;font-size:14px;line-height:1.6;padding:15px;background:#263333;border-left:3px solid var(--yellow);margin-top:16px;scroll-margin-top:calc(var(--header-height) + 16px)}
.checkout-status:target,.checkout-status.is-visible{display:block}
.checkout-status:focus{outline:2px solid var(--yellow);outline-offset:4px}
.checkout-status a{text-decoration:underline;text-underline-offset:3px}
.order-question-link{font-size:12px;margin-top:11px}
.purchase-value-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:35px}
.purchase-value-grid article{border-top:1px solid #526061;padding-top:20px}
.purchase-value-grid h3{font-size:24px;margin-top:18px}
.purchase-value-grid p{font-size:15px;line-height:1.65;color:var(--muted);margin-top:14px}
.purchase-reassurance{display:grid;grid-template-columns:1fr 1fr;gap:10%;align-items:center}
.purchase-reassurance h3{font-size:23px}
.purchase-reassurance>div>p:not(.page-description){font-size:15px;line-height:1.65;color:var(--muted);margin-top:14px}
@media(max-width:900px){
 .header-inner{gap:16px}
 .menu-toggle{display:flex;order:3;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;border:0;background:transparent;color:#101513;padding:11px;flex-shrink:0}
 .menu-toggle span{display:block;width:100%;height:2px;background:currentColor;transition:transform .15s,opacity .15s}
 .menu-toggle[aria-expanded=true] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
 .menu-toggle[aria-expanded=true] span:nth-child(2){opacity:0}
 .menu-toggle[aria-expanded=true] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
 .site-nav{display:none;position:absolute;top:var(--header-height);left:0;right:0;background:#fff;color:#101513;border-bottom:1px solid #b8c0c1;padding:12px 6% 22px;margin:0;flex-direction:column;align-items:stretch;gap:0;font-size:16px;max-height:calc(100dvh - var(--header-height));overflow-y:auto}
 .site-nav.is-open{display:flex}
 .site-nav>a{padding:10px 0;min-height:44px}
 .site-nav .nav-purchase{border-left:0;border-top:1px solid #d8deda;padding:14px 0 4px;margin-top:7px}
 .site-nav>a::after{right:auto;width:26px;bottom:6px}
 .chapter-cards{grid-template-columns:1fr 1fr;gap:26px}
 .product-intro-grid{gap:4%}
 .page-cta-inner{align-items:flex-start;flex-direction:column;gap:25px}
 .order-card{padding:24px}
 .purchase-layout{gap:3%}
 .faq-page-grid{gap:6%;grid-template-columns:1fr 2fr}
 .purchase-mini-previews>a>span{font-size:12px;padding:11px}
}
@media(max-width:700px){
 .product-intro-grid,.editorial-split,.contents-grid,.sample-grid,.faq-page-grid,.purchase-layout,.purchase-reassurance{grid-template-columns:1fr;gap:30px}
 .product-intro-art img{aspect-ratio:1.2}
 .page-intro-copy h1,.purchase-heading h1{font-size:clamp(36px,9vw,50px)}
 .page-lead{font-size:22px;margin-top:21px}
 .page-description{font-size:15px;margin-top:15px}
 .page-actions{gap:13px 18px;margin-top:22px}
 .page-actions .button{font-size:15px}
 .page-section h2,.page-cta h2{font-size:30px}
 .chapter-cards{gap:24px 20px}
 .chapter-cards h3{font-size:23px}
 .chapter-cards p{font-size:14px}
 .chapter-cards .text-link{font-size:12px}
 .scope-note{padding-left:18px}
 .scope-note h3{font-size:22px}
 .page-cta{padding-block:32px}
 .spread-preview{margin-top:27px}
 .spread-preview img{aspect-ratio:1.25;object-position:70% center}
 .contents-list li{grid-template-columns:44px 1fr;gap:17px;padding-block:23px}
 .contents-list h3{font-size:22px}
 .sample-grid>img{aspect-ratio:1.5}
 .faq-side{border-bottom:1px solid #425153;padding-bottom:24px}
 .faq-topic-nav{flex-direction:row;gap:18px}
 .faq-topic-nav a{flex:1;gap:10px;font-size:14px}
 .faq-side>p{margin-top:19px}
 .faq-groups .faq-item summary{font-size:16px}
 .faq-groups .faq-item p{font-size:14px;padding-right:0}
 .purchase-heading{margin-bottom:26px}
 .purchase-visual>figure img{aspect-ratio:1.15}
 .purchase-visual figcaption{font-size:11px}
 .purchase-mini-previews{gap:12px;margin-top:12px}
 .purchase-mini-previews>a>span{font-size:12px;padding:12px}
 .order-card{padding:24px 20px}
 .order-card h2{font-size:29px}
 .order-price strong{font-size:55px}
 .purchase-value-grid{grid-template-columns:1fr;gap:28px}
 .purchase-value-grid h3{font-size:24px;margin-top:14px}
 .purchase-value-grid p{margin-top:11px}
}
@media(max-width:380px){.chapter-cards{grid-template-columns:1fr}.purchase-mini-previews>a>span{font-size:11px;padding:10px}.faq-topic-nav{flex-direction:column;gap:0}.order-specs>div{grid-template-columns:1fr 1.4fr}}
@media print{.page-cta{display:none}.product-intro,.inside-intro,.purchase-landing,.order-card,.page-section-tinted{background:#fff;color:#111}.product-intro-grid,.purchase-layout,.contents-grid,.faq-page-grid,.sample-grid,.editorial-split{grid-template-columns:1fr}.page-description,.scope-note p,.order-subtitle,.order-specs dd{color:#222}.purchase-mini-previews,.faq-side{display:none}}
@media(max-width:900px){
 html:not(.js) .site-header{position:relative}
 html:not(.js) .header-inner{height:auto;min-height:var(--header-height);padding-block:14px;flex-wrap:wrap}
 html:not(.js) .menu-toggle{display:none}
 html:not(.js) .site-nav{display:flex;position:static;flex-direction:row;flex-wrap:wrap;gap:6px 20px;padding:0;border:0;max-height:none;width:100%;font-size:14px}
 html:not(.js) .site-nav .nav-purchase{border:0;padding:10px 0;margin:0}
}
.purchase-heading>.text-link{margin-top:13px}

/* Editorial additions reuse the existing type, colours, width and breakpoints. */
.article-breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:12px;color:var(--muted);margin-bottom:25px}
.article-breadcrumb a{text-decoration:underline;text-underline-offset:4px}
.editorial-intro .article-byline{font-size:12px;margin-top:16px}
.article-hero-image{width:100%;max-height:400px;object-fit:cover;margin-bottom:32px;border:1px solid var(--border)}
.standalone-article>section{padding-block:25px;border-bottom:1px solid var(--border)}
.standalone-article h2{font-size:clamp(25px,2.5vw,35px);line-height:1.2;margin-bottom:18px}
.standalone-article p{font-size:16px;line-height:1.75;margin-top:15px}
.standalone-article p a,.standalone-article dd a{color:var(--yellow);text-decoration:underline;text-underline-offset:3px}
.article-checklist{padding-left:24px;margin:18px 0;line-height:1.75}
.article-checklist li+li{margin-top:13px}
.article-ebook{margin-top:35px;padding:25px;border-left:3px solid var(--yellow);background:#10191b}
.article-ebook h2{font-size:28px}
.article-ebook p{color:var(--muted)}
.article-ebook .button{margin-top:18px}
.related-reading{display:flex;align-items:flex-start;flex-direction:column;gap:14px;padding-block:35px}
.related-reading h2{font-size:25px;margin:0 0 5px}
.related-reading a{text-decoration:underline;text-underline-offset:4px;min-height:32px}
.faq-groups .faq-item p a{color:var(--yellow);text-decoration:underline;text-underline-offset:3px}
@media(max-width:700px){.standalone-article p,.article-checklist{font-size:15px}.article-ebook{padding:21px}.article-breadcrumb{font-size:11px}.article-hero-image{max-height:280px}}

/* The journal: editorial imagery, clear topic browsing and readable stories. */
.journal-masthead{padding:64px 0 48px;background:radial-gradient(ellipse at 80% 10%,#182124 0,transparent 55%),#080d0e}
.journal-masthead>.container{display:flex;align-items:flex-end;justify-content:space-between;gap:40px}
.journal-masthead .eyebrow{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:12px;letter-spacing:.14em}
.journal-dot{width:8px;height:8px;background:var(--yellow);border-radius:50%;box-shadow:0 0 18px #f1f51c66}
.journal-masthead h1{font-size:clamp(40px,5.1vw,72px);line-height:1.04;letter-spacing:-.055em}
.journal-masthead h1 span{color:var(--yellow)}
.journal-masthead h1+p{font-size:18px;color:var(--muted);line-height:1.6;margin-top:23px}
.journal-issue{padding:0 0 5px 30px;border-left:1px solid var(--border);flex-shrink:0;display:flex;flex-direction:column;align-items:flex-start}
.journal-issue strong{font-size:88px;font-family:'Roboto Condensed',sans-serif;letter-spacing:-.05em;line-height:.95;color:var(--yellow)}
.journal-issue>span{font-size:13px;color:var(--muted);margin-top:8px}
.journal-issue a{margin-top:18px;font-size:13px;min-height:36px;display:flex;align-items:center;text-decoration:underline;text-underline-offset:5px}
.journal-features{padding:0 0 45px;background:#080d0e}
.journal-feature-grid{display:grid;grid-template-columns:1.65fr 1fr;grid-template-rows:repeat(2,244px);gap:18px}
.journal-feature{position:relative;isolation:isolate;overflow:hidden;display:flex;align-items:flex-end;border:1px solid #3b4547;border-radius:8px;background:#11191a;min-width:0}
.journal-feature-main{grid-row:span 2}
.journal-feature>img{position:absolute;inset:0;z-index:-2;width:100%;height:100%;object-fit:cover;transition:transform .7s cubic-bezier(.22,1,.36,1)}
.journal-feature::before{content:'';position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,#00000000 10%,#03090999 48%,#030809f5 100%)}
.journal-feature>div{padding:24px;width:100%}
.journal-feature .eyebrow{color:var(--yellow);font-size:11px;letter-spacing:.12em;margin-bottom:12px}
.journal-feature h2{font-size:clamp(22px,2.2vw,30px);line-height:1.1;max-width:25ch;letter-spacing:-.04em}
.journal-feature-main h2{font-size:clamp(30px,3.4vw,46px);max-width:20ch}
.journal-feature-main>div{padding:32px}
.journal-feature p:not(.eyebrow){color:#d3dbdc;font-size:15px;line-height:1.6;margin-top:15px;max-width:40ch}
.journal-feature-link{display:flex;align-items:center;justify-content:space-between;margin-top:17px;font-size:13px;font-weight:700}
.journal-feature-link>span{display:grid;place-items:center;width:36px;height:36px;background:var(--yellow);color:#0a0f0f;border-radius:50%;font-size:21px}
.journal-feature:hover{border-color:var(--yellow)}
.journal-feature:hover>img{transform:scale(1.035)}
.journal-topic-rail{background:var(--yellow);color:#0a100f;padding:17px 0;border-block:1px solid #acb007}
.journal-topic-rail>.container{display:flex;align-items:center;justify-content:space-between;gap:14px;font-size:clamp(12px,1.35vw,18px);font-weight:700;letter-spacing:.12em}
.journal-topic-rail span[aria-hidden]{font-weight:400;font-size:24px;line-height:1;opacity:.6}
.journal-library{padding:62px 0 75px;scroll-margin-top:100px}
.journal-section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px}
.journal-section-heading .eyebrow{font-size:11px;color:var(--yellow);letter-spacing:.13em;margin-bottom:13px}
.journal-section-heading h2{font-size:clamp(30px,3.4vw,46px);letter-spacing:-.045em}
.journal-section-heading>p{font-size:13px;color:var(--muted);text-align:right}
.journal-controls{margin-bottom:30px}
.journal-search{max-width:540px;margin-bottom:22px}
.journal-search label{display:block;color:var(--muted);font-size:13px;margin-bottom:8px}
.journal-search>div{display:flex;align-items:center;gap:12px;background:#10191a;border:1px solid #455153;border-radius:5px;padding:0 14px;min-height:54px}
.journal-search svg{width:20px;height:20px;flex-shrink:0;fill:none;stroke:var(--muted);stroke-width:1.7}
.journal-search input{min-width:0;width:100%;padding:14px 0;background:transparent;border:0;color:var(--text);font:16px var(--body)}
.journal-search input::placeholder{color:#a7b2b3;opacity:1}
.journal-search input:focus-visible{outline:0}
.journal-search>div:focus-within{outline:2px solid var(--yellow);outline-offset:3px}
.journal-search button{background:none;border:0;color:var(--yellow);font-size:13px;min-height:44px;flex-shrink:0}
.journal-filters{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.journal-filters button{min-height:44px;padding:10px 17px;border:1px solid #455153;border-radius:4px;background:#0e1617;color:#d7dfe0;font-size:14px;transition:background .2s,color .2s,border-color .2s}
.journal-filters button[aria-pressed=true]{background:var(--yellow);border-color:var(--yellow);color:#0b1110;font-weight:700}
.journal-filters button:hover{border-color:var(--yellow)}
.journal-card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px 22px}
.journal-card{min-width:0;border:1px solid #303d3f;border-radius:7px;overflow:hidden;background:#0d1516;scroll-margin-top:100px;transition:border-color .25s,transform .25s}
.journal-card>a{display:flex;flex-direction:column;height:100%}
.journal-card-image{position:relative;aspect-ratio:1.9;overflow:hidden;background:#142022}
.journal-card-image img{width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.22,1,.36,1)}
.journal-card-image>span{position:absolute;right:14px;bottom:14px;width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:#0a1010b3;border:1px solid #8b969866;font-size:20px}
.journal-card-copy{padding:22px;display:flex;flex-direction:column;flex:1;min-width:0}
.journal-card-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;color:var(--yellow);font-size:11px;line-height:1.5;margin-bottom:13px}
.journal-card-meta>span{color:var(--muted);white-space:nowrap}
.journal-card h3{font-size:23px;line-height:1.18;letter-spacing:-.025em;overflow-wrap:break-word}
.journal-card-description{color:#bcc7c8;font-size:14px;line-height:1.65;margin-top:13px}
.journal-read-link{margin-top:auto;padding-top:22px;font-size:13px;font-weight:700;display:flex;justify-content:space-between;align-items:center}
.journal-read-link>span{color:var(--yellow);font-size:20px}
.journal-card:hover{border-color:#a4ad20;transform:translateY(-3px)}
.journal-card:hover img{transform:scale(1.035)}
.journal-empty{padding:48px 25px;border:1px dashed var(--border);text-align:center;background:#0d1516}
.journal-empty h3{font-size:28px}
.journal-empty p{color:var(--muted);margin-top:12px}
.journal-empty button{margin-top:24px}
.journal-bottom-guide{background:#131d1f;border-top:1px solid #3e4c4e;overflow:hidden}
.journal-bottom-guide>.container{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:30px}
.journal-bottom-guide>.container>div{padding:55px 0}
.journal-bottom-guide .eyebrow{font-size:11px;color:var(--yellow)}
.journal-bottom-guide h2{font-size:clamp(42px,5vw,70px);line-height:1.03;letter-spacing:-.05em}
.journal-bottom-guide h2 span{color:var(--yellow)}
.journal-bottom-guide p:not(.eyebrow){color:var(--muted);font-size:16px;line-height:1.7;margin-top:20px}
.journal-bottom-guide .button{margin-top:25px}
.journal-bottom-guide img{width:100%;height:100%;object-fit:cover;object-position:75% center;min-height:350px}
.journal-article-hero{position:relative;isolation:isolate;background:#0c1314;overflow:hidden}
.journal-banner{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2}
.journal-article-hero::before{content:'';position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,#030909e8,#03090980 70%,#03090944),linear-gradient(0deg,#030909d9,transparent)}
.journal-article-heading{padding-block:35px 52px;min-height:560px;display:flex;flex-direction:column;justify-content:flex-end}
.journal-article-heading .article-breadcrumb{margin-bottom:auto;padding-bottom:32px;color:#d8e0df;flex-wrap:wrap;font-size:13px}
.journal-article-heading .eyebrow{font-size:12px;text-transform:uppercase;color:var(--yellow);letter-spacing:.12em;margin-bottom:16px}
.journal-article-heading h1{font-size:clamp(36px,4.6vw,64px);line-height:1.07;max-width:23ch;letter-spacing:-.045em}
.journal-deck{max-width:760px;font-size:18px;line-height:1.6;color:#e0e6e5;margin-top:23px}
.journal-byline{display:flex;flex-wrap:wrap;gap:9px;color:#c2cdcc;font-size:13px;line-height:1.7;margin-top:25px}
.journal-article-layout{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:70px;padding-block:48px 65px;max-width:1120px}
.journal-body{min-width:0;font-size:18px;line-height:1.8}
.journal-body>section{margin-top:44px;scroll-margin-top:100px}
.journal-body h2{font-size:clamp(26px,2.5vw,34px);line-height:1.2;letter-spacing:-.03em;margin-bottom:19px}
.journal-body h3{font-size:23px;line-height:1.3;margin-top:26px}
.journal-body p{margin-top:17px;color:#d1dcdb}
.journal-body a{color:var(--yellow);text-decoration:underline;text-underline-offset:4px}
.journal-body .article-checklist{line-height:1.8}
.journal-body .decision-notes{font-size:16px}
.journal-takeaway{padding:24px 28px;background:#111d1e;border:1px solid #3b4d4f;border-left:3px solid var(--yellow)}
.journal-takeaway .eyebrow{font-size:11px;color:var(--yellow);margin-bottom:10px}
.journal-takeaway h2{font-size:25px;margin-bottom:13px}
.journal-takeaway ul{margin:0;padding-left:21px;font-size:16px;line-height:1.7;color:#e1e7e6}
.journal-takeaway li+li{margin-top:7px}
.journal-sidebar{align-self:start;position:sticky;top:calc(var(--header-height) + 25px)}
.journal-sidebar nav{padding-bottom:23px;border-bottom:1px solid #344345;margin-bottom:25px}
.journal-sidebar .eyebrow{font-size:11px;color:var(--yellow);margin-bottom:15px}
.journal-sidebar nav a{display:block;padding:10px 0;font-size:14px;line-height:1.5;color:#c7d3d2;text-decoration:underline;text-underline-offset:4px}
.journal-guide-box{padding:18px;background:#111b1d;border:1px solid #3b494b;border-radius:5px}
.journal-guide-box img{aspect-ratio:1.9;object-fit:cover;object-position:right; margin-bottom:18px}
.journal-guide-box h2{font-size:27px;line-height:1.1;letter-spacing:-.03em}
.journal-guide-box p{font-size:14px;color:var(--muted);margin-top:14px}
.journal-guide-box .button{margin-top:20px;width:100%;font-size:13px}
.journal-guide-box .text-link{font-size:12px;margin-top:12px}
.journal-scope{font-size:13px!important;line-height:1.7;padding-top:25px;border-top:1px solid #344345;margin-top:38px!important;color:#a9b8b7!important}
.journal-related{padding:48px 0 65px;background:#10191a;border-top:1px solid #344345}
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