/* PetroMak design tokens — change brand colors here. */
:root{--blue:#285bd4;--blue-dark:#1845ab;--ink:#202d48;--muted:#626d80;--line:#e8edf4;--radius:24px;--max-width:1180px;--font:Inter,"Avenir Next",Avenir,"Segoe UI",Arial,sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0;background:#fff;color:var(--ink);font-family:var(--font);font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{font:inherit}img{max-width:100%;display:block}h1,h2,h3,p{margin:0}h1,h2,h3{line-height:1.18}a,button{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible{outline:3px solid #d37413;outline-offset:5px}::selection{background:#d6e4ff}.container{width:min(var(--max-width),calc(100% - 64px));margin-inline:auto}.skip-link{position:fixed;top:-100px;left:16px;z-index:100;background:#fff;padding:12px 22px;border:2px solid var(--blue)}.skip-link:focus{top:10px}.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line)}.header-inner{min-height:92px;display:flex;align-items:center;justify-content:space-between;gap:30px}.brand{display:inline-flex;align-items:center;gap:10px;font-size:26px;font-weight:800;letter-spacing:-1px;white-space:nowrap}.brand-blue{color:var(--blue)}.brand-mark{width:37px;height:39px;background:var(--blue);color:#fff;border-radius:11px;display:inline-flex;align-items:center;justify-content:center;font-size:28px;letter-spacing:-4px;padding-right:4px}.brand-mark span{color:#b4d6ff}nav{display:flex;gap:25px;align-items:center}nav a{font-size:14px;font-weight:600;white-space:nowrap;position:relative;padding-block:12px}nav a:hover,nav a[aria-current]{color:var(--blue)}nav a[aria-current]:after{content:"";position:absolute;bottom:4px;width:17px;height:3px;border-radius:3px;left:calc(50% - 8px);background:var(--blue)}.menu-toggle{display:none}.hero{display:grid;grid-template-columns:1.12fr 1fr;gap:65px;align-items:center;padding-top:66px;padding-bottom:72px}.eyebrow{color:var(--blue);font-size:12px;letter-spacing:1.7px;font-weight:750;line-height:1.6}.hero .eyebrow{font-size:13px;letter-spacing:.25px;display:flex;align-items:center;gap:8px;margin-bottom:22px}.hero .eyebrow span{font-size:21px}h1{font-size:clamp(40px,4.25vw,58px);font-weight:800;letter-spacing:-2.6px;line-height:1.13}h1>span{color:var(--blue)}.hero-description{font-size:17px;color:var(--muted);margin-top:23px;max-width:480px;line-height:1.85}.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:29px}.button{display:inline-flex;min-height:51px;align-items:center;justify-content:center;gap:23px;padding:12px 23px;border:1px solid transparent;border-radius:10px;font-size:14px;font-weight:700;transition:background .2s,transform .2s,box-shadow .2s}.button:hover{transform:translateY(-2px)}.button span{font-size:19px;font-weight:400}.primary{background:var(--blue);color:#fff;box-shadow:0 5px 15px #285bd41b}.primary:hover{background:var(--blue-dark)}.secondary{border-color:#d9e1ec;background:#fff}.secondary:hover{background:#f5f8ff}.hero-note{font-size:12px;color:#6c7789;margin-top:23px}.hero-note>span:first-child{color:var(--blue);padding-right:5px}.note-divider{padding:0 9px}.hero-visual{min-height:478px;background:#f0f5ff;border-radius:38px;position:relative;display:flex;align-items:center;justify-content:center;padding:56px 24px 54px;isolation:isolate}.visual-caption{position:absolute;top:24px;left:0;right:0;text-align:center;font-size:10px;letter-spacing:1.8px;color:#5275ae;font-weight:700}.visual-caption span{padding-right:8px}.hero-book{width:238px;height:auto;transform:rotate(-8deg);box-shadow:9px 18px 28px #284a7b26;border-radius:3px}.word-note{position:absolute;right:-18px;bottom:67px;display:flex;align-items:center;gap:12px;background:#fff;box-shadow:0 12px 30px #24386213;border:1px solid #e8edf6;padding:14px 19px;border-radius:15px;transform:rotate(3deg)}.word-note-icon{display:grid;place-items:center;width:42px;height:42px;border-radius:11px;color:var(--blue);background:#edf3ff;font-weight:750;font-size:21px}.word-note strong,.word-note div>span{display:block;line-height:1.6;font-size:13px}.word-note div>span{font-size:12px;color:var(--muted)}.visual-bottom{position:absolute;bottom:18px;left:0;right:0;text-align:center;font-size:12px;color:#6d7f99}.section{padding-top:46px;padding-bottom:76px}.section-heading{margin-bottom:32px}.centered{text-align:center}h2{font-size:36px;letter-spacing:-1.2px;font-weight:750}.section-heading h2{margin-top:9px}.section-heading p:not(.eyebrow){color:var(--muted);margin-top:12px;font-size:15px}.category-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.category-card{padding:28px 23px 24px;border-radius:var(--radius);display:flex;align-items:flex-start;flex-direction:column;scroll-margin-top:110px}.blue{background:#edf4ff}.green{background:#edf7f1}.peach{background:#fff3e9}.lilac{background:#f3effb}.category-icon{display:flex;align-items:center;justify-content:center;width:49px;height:49px;border-radius:14px;background:#fff9;font-size:24px;font-weight:700;color:var(--blue);margin-bottom:24px}.green .category-icon{color:#397357}.peach .category-icon{color:#a95d2a}.lilac .category-icon{color:#7758a8}.small-letter{font-size:15px;align-self:flex-end;padding-bottom:7px}.card-label{font-size:10px;letter-spacing:1.1px;font-weight:700;color:#5b6980;margin-bottom:10px}.category-card h3{font-size:20px;letter-spacing:-.6px}.category-card>p:not(.card-label){margin-top:13px;font-size:14px;line-height:1.8;color:#596579}.text-link{display:flex;align-items:center;justify-content:space-between;gap:8px;width:100%;margin-top:auto;padding-top:23px;color:#254c90;font-size:13px;font-weight:700}.text-link:hover{text-decoration:underline;text-underline-offset:4px}.text-link span{font-size:20px}.why-section{background:#f8fafc;border-block:1px solid #f0f3f7;padding:60px 0}.why-layout{display:grid;grid-template-columns:1fr 1fr;gap:110px;align-items:center}.why-intro h2{margin-top:14px;font-size:40px}.why-intro>p:last-child{color:var(--muted);max-width:420px;margin-top:19px;font-size:15px;line-height:1.9}.benefits{display:grid;gap:27px}.benefits article{display:flex;align-items:flex-start;gap:18px}.benefit-icon{flex-shrink:0;display:grid;place-items:center;width:44px;height:44px;background:#eaf0fc;border-radius:13px;color:var(--blue);font-weight:700;font-size:19px}.benefits h3{font-size:17px;margin:2px 0 6px}.benefits p{font-size:14px;color:var(--muted);max-width:340px}.featured-section{padding-top:73px;padding-bottom:66px}.featured-heading{display:flex;align-items:center;justify-content:space-between;gap:20px}.collection-label{font-size:10px;letter-spacing:1.7px;color:#7b8597;border-bottom:1px solid #d9e1ed;padding-bottom:8px}.book-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}.book-stage{height:330px;border-radius:var(--radius);display:flex;align-items:center;justify-content:center;position:relative;padding:28px 25px 42px}.stage-blue{background:#f0f4fc}.stage-green{background:#f0f5f1}.stage-peach{background:#fcf5e9}.book-stage img{width:172px;height:auto;box-shadow:7px 9px 16px #28384724;transition:transform .25s;border-radius:2px}.book-card:hover .book-stage img{transform:translateY(-5px) rotate(-2deg)}.book-tag{position:absolute;left:17px;bottom:17px;background:#fff;border-radius:20px;font-size:11px;padding:4px 11px;color:#54627a}.book-info{padding:20px 5px 0}.book-category{font-size:10px;letter-spacing:1.35px;font-weight:700;color:var(--blue);margin-bottom:7px}.book-info h3{font-size:21px;letter-spacing:-.5px}.book-info>p:last-child{color:var(--muted);font-size:14px;margin-top:8px}.final-section{padding-bottom:64px}.final-cta{padding:48px 28px;text-align:center;border-radius:28px;background:#285bd4;color:#fff}.final-cta .eyebrow{color:#dae6ff;font-size:10px;letter-spacing:1.8px}.final-cta h2{font-size:46px;letter-spacing:-1.8px;margin:12px 0}.final-cta>p:not(.eyebrow){color:#e0eaff;font-size:16px}.final-cta .actions{justify-content:center;margin-top:25px}.white-button{background:#fff;color:#224fb9}.white-button:hover{background:#eef3ff}.ghost-button{border-color:#87a6ef;color:#fff}.ghost-button:hover{background:#3769df}.footer-main{display:flex;justify-content:space-between;gap:30px;padding:8px 0 36px}.footer-main .brand{font-size:23px}.footer-main p{font-size:13px;color:var(--muted);margin-top:12px}.footer-contact h2{font-size:16px;letter-spacing:0}.footer-bottom{display:flex;justify-content:space-between;gap:18px;padding:23px 0 28px;border-top:1px solid var(--line);font-size:12px;color:#6b7688}.footer-bottom a:hover{color:var(--blue)}
@media(min-width:1600px){.hero{padding-top:85px;padding-bottom:85px}}
@media(max-width:1100px){nav{gap:15px}nav a{font-size:12px}.hero{gap:35px}.word-note{right:-5px}.category-grid{gap:14px}.category-card{padding:24px 18px}.category-card h3{font-size:18px}.why-layout{gap:60px}h2{font-size:32px}}
@media(max-width:900px){.container{width:calc(100% - 40px)}.header-inner{flex-wrap:wrap;gap:0;min-height:78px}.brand{font-size:24px}.menu-toggle:not([hidden]){display:flex;align-items:center;gap:10px;background:#f1f5fc;border:1px solid #e2e9f4;border-radius:9px;padding:9px 13px;font-size:14px;color:var(--ink);cursor:pointer}.menu-lines{width:16px;height:10px;border-block:2px solid currentColor}nav{width:100%;padding:9px 0 18px;display:grid;grid-template-columns:repeat(3,1fr);gap:3px 12px}nav a{font-size:14px}nav a[aria-current]:after{display:none}.js nav{display:none}.js nav.is-open{display:grid}.hero{padding-top:43px;padding-bottom:40px;gap:30px}h1{font-size:43px;letter-spacing:-1.9px}.hero-description{font-size:16px}.hero-description br{display:none}.hero-visual{min-height:430px}.hero-book{width:204px}.hero .eyebrow{font-size:12px}.hero-note{max-width:280px}.button{padding:11px 17px;gap:14px}.word-note{bottom:62px;padding:12px}.category-grid{grid-template-columns:repeat(2,1fr);gap:18px}.category-card{padding:26px}.category-card h3{font-size:22px}.category-card>p:not(.card-label){font-size:16px}.category-card .text-link{font-size:14px}.category-icon{margin-bottom:20px}.why-layout{gap:40px}.why-intro h2{font-size:35px}.book-grid{gap:18px}.book-stage{height:275px;padding:25px 18px 46px}.book-stage img{width:142px}.book-info h3{font-size:18px}.collection-label{display:none}.section{padding-top:36px;padding-bottom:52px}.featured-section{padding-top:52px}.final-cta h2{font-size:40px}}
@media(max-width:640px){.container{width:calc(100% - 36px)}html{scroll-padding-top:94px}.header-inner{min-height:74px}.brand-mark{width:33px;height:35px;font-size:25px}nav{grid-template-columns:repeat(2,1fr);padding-bottom:16px}.hero{grid-template-columns:1fr;gap:35px;padding-top:34px;padding-bottom:27px}.hero-copy{max-width:480px}.hero .eyebrow{margin-bottom:17px}h1{font-size:clamp(37px,9.1vw,54px);letter-spacing:-1.6px}.hero-description{margin-top:19px;line-height:1.8}.hero .actions{margin-top:23px}.hero-note{max-width:none;font-size:11px}.hero-visual{min-height:370px;border-radius:28px;max-width:460px;width:100%;margin-inline:auto;padding:55px 25px}.hero-book{width:188px}.visual-caption{font-size:9px;letter-spacing:1.3px}.word-note{right:10px;bottom:48px}.word-note-icon{width:35px;height:35px}.word-note strong{font-size:12px}.word-note div>span{font-size:11px}.section-heading{margin-bottom:25px}h2{font-size:29px;letter-spacing:-.9px}.section-heading p:not(.eyebrow){font-size:15px}.eyebrow{font-size:10px;letter-spacing:1.2px}.category-grid{grid-template-columns:1fr}.category-card{padding:26px}.category-card .card-label{font-size:10px}.category-card h3{font-size:24px}.category-card .category-icon{margin-bottom:17px}.category-card>p:not(.card-label){margin-top:10px}.text-link{padding-top:20px}.why-section{padding:39px 0}.why-layout{grid-template-columns:1fr;gap:31px}.why-intro h2{font-size:33px}.why-intro h2 br{display:none}.why-intro>p:last-child{font-size:16px;max-width:none}.benefits{gap:23px}.benefits p{font-size:15px}.book-grid{grid-template-columns:1fr;gap:30px}.book-stage{height:330px}.book-stage img{width:181px}.book-info{padding-top:17px}.book-info h3{font-size:23px}.book-info>p:last-child{font-size:16px}.book-tag{font-size:12px}.featured-section{padding-top:40px}.final-section{padding-bottom:38px}.final-cta{padding:36px 20px;border-radius:23px}.final-cta h2{font-size:34px;letter-spacing:-1.2px}.final-cta .eyebrow{font-size:9px}.final-cta .actions{flex-direction:column;align-items:stretch;max-width:300px;margin-inline:auto}.footer-main{flex-direction:column;gap:28px;padding-bottom:28px}.footer-bottom{flex-wrap:wrap;gap:12px}.footer-bottom>span{width:100%}.footer-main p{font-size:14px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}
@media print{.site-header,.actions,.menu-toggle,.skip-link,.footer-bottom a{display:none!important}body{font-size:12pt}.container{width:100%}.hero{padding:20px 0}.hero-visual{min-height:300px}.category-grid{grid-template-columns:repeat(2,1fr)}.category-card,.book-card,.final-cta{break-inside:avoid}.site-footer{margin-top:20px}}