:root{--10x-blue:#1d2a59;--10x-orange:#e28743;--amazon-yellow:#ffcc00;--background:#f6f7fb;--text-color:#1d2a59;--text-secondary:#444952;--card-bg:#ffffff;--shadow-color:rgba(30,40,80,0.18);--border-color:#e5e7eb;--footer-bg:#f6f7fb;--footer-text:#003a71;--footer-border:#ececf2;--footer-powered:#4b6284;--transition-speed:0.3s}[data-theme=dark]{--10x-blue:#3a4980;--background:#121212;--text-color:#e0e0e0;--text-secondary:#b0b0b0;--card-bg:#1e1e1e;--shadow-color:rgba(0,0,0,0.3);--border-color:#333333;--footer-bg:#1a1a1a;--footer-text:#e0e0e0;--footer-border:#333333;--footer-powered:#b0b0b0;--10x-orange:#ff9d4d}body{min-height:100vh;min-width:100vw;background:var(--background);color:var(--text-color);font-family:Montserrat,Arial,sans-serif;margin:0;padding:0;padding-top:44px;display:flex;flex-direction:column;transition:background-color var(--transition-speed),color var(--transition-speed)}.wrapper-main{flex:1;display:flex;align-items:flex-start;justify-content:center;min-height:calc(100vh - 90px);padding-top:48px;box-sizing:border-box;background-color:var(--background);transition:background-color var(--transition-speed)}.theme-toggle-container{display:flex;justify-content:center;margin:20px 0}.theme-toggle-menu{display:flex;align-items:center;justify-content:center;cursor:pointer;margin-left:1.5rem;padding:6px;border-radius:50%;transition:background-color var(--transition-speed);position:relative;top:-1px;background:0 0;border:none;color:inherit;font:inherit}.theme-toggle-menu:hover{background-color:rgba(255,255,255,.1)}.theme-toggle-menu .icon{width:18px;height:18px}.theme-toggle{display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--transition-speed);color:var(--footer-text);text-decoration:none;font-size:.9rem;background-color:var(--background);border-radius:30px;padding:8px 16px;border:1px solid var(--border-color);box-shadow:0 2px 5px rgba(0,0,0,.1)}[data-theme=dark] .theme-toggle{background-color:var(--10x-blue);color:#fff;border-color:var(--10x-blue)}.theme-toggle:hover{transform:translateY(-2px);box-shadow:0 4px 8px rgba(0,0,0,.15)}.theme-toggle .icon{width:18px;height:18px;margin-right:8px;vertical-align:middle}nav{background:var(--10x-blue);padding:.7rem 0;box-shadow:0 2px 10px rgba(30,40,80,.08);border-bottom:5px solid var(--10x-orange);position:fixed;top:0;left:0;width:100vw;z-index:100}.nav-content{max-width:1100px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:0 20px}.nav-logo{display:flex;align-items:center;gap:14px;font-size:1.3rem;font-weight:800;color:#fff;text-decoration:none;letter-spacing:-1px}.nav-logo img{height:44px;display:block}.nav-menu{display:flex;flex-direction:row;align-items:center}.nav-menu a{color:#fff;margin-left:2.1rem;text-decoration:none;font-weight:500;font-size:1.05rem;transition:color var(--transition-speed);display:flex;align-items:center}.nav-menu a img.menu-icon{vertical-align:middle;margin-right:6px;width:18px;height:18px}.nav-menu a:hover{color:var(--10x-orange)}.nav-toggle{display:none;background:0 0;border:none;padding:.5rem;cursor:pointer;z-index:101}.hamburger-line{display:block;width:25px;height:3px;background-color:#fff;margin:5px 0;transition:transform .3s ease,opacity .3s ease}.nav-toggle[aria-expanded=true] .hamburger-line:first-child{transform:translateY(8px) rotate(45deg)}.nav-toggle[aria-expanded=true] .hamburger-line:nth-child(2){opacity:0}.nav-toggle[aria-expanded=true] .hamburger-line:nth-child(3){transform:translateY(-8px) rotate(-45deg)}main{padding-top:75px}.main-container{max-width:1100px;margin:0 auto;display:flex;flex-direction:row;align-items:center;min-height:84vh;padding:16px 16px 24px 16px;gap:54px}.book-cover{min-width:310px;max-width:340px;box-shadow:0 8px 24px var(--shadow-color);border-radius:12px;background:var(--card-bg);display:flex;align-items:center;justify-content:center;padding:12px;transition:background-color var(--transition-speed),box-shadow var(--transition-speed)}.book-cover img{width:100%;height:auto;border-radius:8px;display:block}.info-block{flex:1;display:flex;flex-direction:column;justify-content:center;max-width:580px}.title{font-size:2.7rem;font-weight:700;margin-bottom:1.1rem;letter-spacing:-1px;color:var(--text-color);transition:color var(--transition-speed)}.amazon-btn{display:flex;align-items:center;justify-content:center;background:var(--amazon-yellow);color:#232323;font-weight:700;font-size:1.3rem;border:none;border-radius:12px;padding:1.1rem 2.6rem;margin-top:18px;box-shadow:0 3px 18px rgba(0,0,0,.13);cursor:pointer;text-decoration:none;transition:background .15s,transform .1s;font-family:inherit}.amazon-btn img{height:32px;margin-left:12px;vertical-align:middle}.amazon-btn:hover{background:#f2c200;transform:translateY(-2px) scale(1.025)}.center{width:80vw;max-width:640px;min-width:270px;background:var(--card-bg);border-radius:18px;padding:1.3rem 1.2rem 2.3rem 1.2rem;box-shadow:0 2px 18px var(--shadow-color);text-align:center;margin:0 auto;display:flex;flex-direction:column;justify-content:center;transition:background-color var(--transition-speed),box-shadow var(--transition-speed)}.center h1{color:var(--10x-orange);margin-bottom:1.1rem;font-size:2.4rem;font-weight:800;transition:color var(--transition-speed)}.subtitle{font-size:1.25rem;margin-bottom:1.2rem;color:#2ec8df;font-weight:700;letter-spacing:.03em}.description{font-size:1.01rem;color:var(--text-secondary);margin-bottom:2.2rem;line-height:1.68;font-weight:400}.newsletter-links{display:flex;gap:1.1rem;margin-top:2rem;justify-content:center;align-items:center;flex-wrap:wrap}.newsletter-btn{display:flex;align-items:center;justify-content:center;gap:.7em;font-weight:700;font-size:1.1rem;border-radius:12px;padding:.95rem 1.7rem;text-decoration:none;box-shadow:0 2px 8px var(--shadow-color);border:2px solid transparent;transition:background .16s,color .13s,border-color .13s,box-shadow .14s;margin-bottom:.6rem;min-width:120px;max-width:320px;width:auto;white-space:nowrap}.newsletter-btn.linkedin{background:#0077b5;color:#fff;border:2px solid #0077b5}.newsletter-btn.linkedin:hover{background:#005983;border-color:#005983;color:#fff}.newsletter-btn.substack{background:var(--card-bg);color:var(--10x-orange);border:2px solid var(--10x-orange);transition:background-color var(--transition-speed),color var(--transition-speed),border-color var(--transition-speed)}.newsletter-btn.substack:hover{background:var(--10x-orange);color:#fff;border-color:var(--10x-orange)}.newsletter-btn svg{height:1.3em;width:1.3em;display:inline-block;vertical-align:middle}.back-link{display:block;color:#673ab7;margin-top:1.2rem;text-align:center;font-weight:500;font-size:1.08rem;text-decoration:underline;transition:color var(--transition-speed)}[data-theme=dark] .back-link{color:#9575cd}.back-link:hover{color:var(--10x-orange)}.back-to-top{position:fixed;bottom:32px;right:22px;z-index:9999;background:var(--10x-blue);color:#fff;border:none;border-radius:50%;width:44px;height:44px;font-size:1.6rem;box-shadow:0 2px 8px rgba(0,0,0,.13);cursor:pointer;opacity:0;pointer-events:none;transition:opacity .2s,transform .3s}.back-to-top.visible{opacity:1;pointer-events:auto}.back-to-top:focus,.back-to-top:hover{transform:translateY(-4px);box-shadow:0 4px 12px rgba(0,0,0,.2);outline:0}[data-theme=dark] .back-to-top{background:var(--10x-orange);color:var(--10x-blue)}.footer{background:var(--footer-bg);color:var(--footer-text);text-align:center;font-size:.97rem;padding:.7rem 0 .4rem 0;margin-top:20px;box-shadow:none;border-top:1px solid var(--footer-border);min-height:0;transition:background-color var(--transition-speed),color var(--transition-speed),border-color var(--transition-speed)}.footer-inner{max-width:480px;margin:0 auto;padding:0 12px;display:flex;flex-direction:column;align-items:center;gap:.12rem}.footer-main{font-weight:500;letter-spacing:.01em;margin-bottom:2px;font-size:.98rem}.footer-powered{font-size:.91rem;color:var(--footer-powered);letter-spacing:.02em;font-weight:400;transition:color var(--transition-speed)}.powered-link{font-weight:500;color:var(--footer-text);text-decoration:none;margin:0 .05em;transition:color var(--transition-speed)}.powered-link:visited{color:var(--footer-text)}.powered-link:active,.powered-link:hover{color:var(--10x-orange)}.ten{font-weight:500;color:var(--footer-text);transition:color var(--transition-speed)}.ex{font-weight:600;color:var(--10x-orange)}.author-container{max-width:520px;margin:16px auto 0 auto;background:var(--card-bg);border-radius:18px;box-shadow:0 2px 18px var(--shadow-color);padding:2.6rem 2rem 2.1rem 2rem;text-align:center;transition:background-color var(--transition-speed),box-shadow var(--transition-speed)}.author-title{font-size:2.2rem;font-weight:800;margin-bottom:1.3rem;color:var(--text-color);letter-spacing:-1px;transition:color var(--transition-speed)}.author-avatar{width:104px;height:104px;border-radius:50%;object-fit:cover;margin-bottom:1.6rem;border:3.5px solid var(--border-color);box-shadow:0 2px 8px var(--shadow-color);transition:border-color var(--transition-speed),box-shadow var(--transition-speed)}.author-name{font-size:1.18rem;font-weight:700;color:var(--text-color);margin-bottom:.2rem;transition:color var(--transition-speed)}.author-bio{font-size:1.04rem;color:var(--text-secondary);line-height:1.6;margin-bottom:1.3rem;text-align:center;transition:color var(--transition-speed)}.author-links{margin:1.4rem 0 .7rem 0;display:flex;flex-direction:row;gap:1.5rem;justify-content:center;align-items:center;font-size:1.08rem;flex-wrap:wrap;text-align:center}.author-links a{color:var(--text-color);text-decoration:none;display:flex;align-items:center;gap:.48em;font-weight:500;transition:color var(--transition-speed)}.author-links a:hover{color:var(--10x-orange);text-decoration:underline}.author-links svg{height:1.13em;width:1.13em;opacity:.89;vertical-align:middle;transition:fill var(--transition-speed)}[data-theme=dark] .author-links svg path,[data-theme=dark] .author-links svg rect{fill:#ffffff}[data-theme=dark] .author-links a:hover svg path,[data-theme=dark] .author-links a:hover svg rect{fill:var(--10x-orange)}.author-contact{margin-top:.5rem;color:var(--text-secondary);font-size:1rem;transition:color var(--transition-speed)}.author-contact-link{color:#e28743;font-weight:600}.substack-svg-icon{vertical-align:middle}.notfound-outer{display:flex;flex:1;align-items:center;justify-content:center;min-height:80vh}.notfound-card{max-width:430px;width:90vw;background:#fff;border-radius:18px;box-shadow:0 2px 18px rgba(30,40,80,.13);padding:2.2rem 1.6rem 2.2rem 1.6rem;text-align:center;margin:0 auto;display:flex;flex-direction:column;align-items:center}.notfound-logo{width:48px;height:48px;margin-bottom:1.4rem}.notfound-code{font-size:3.4rem;font-weight:900;color:var(--10x-orange,#e28743);letter-spacing:-3px;margin-bottom:.5rem}.notfound-title{font-size:1.45rem;font-weight:800;color:var(--10x-blue,#1d2a59);margin-bottom:.7rem;letter-spacing:-1px}.notfound-msg{color:#52526d;font-size:1.11rem;margin-bottom:2rem;line-height:1.55}.notfound-link{color:#fff;background:var(--10x-blue,#1d2a59);padding:.9em 2em;border-radius:16px;font-weight:700;text-decoration:none;display:flex;align-items:center;justify-content:center;font-size:1.08rem;box-shadow:0 2px 8px rgba(36,88,220,.13);transition:background .16s,transform .1s}.notfound-link:hover{background:var(--10x-orange,#e28743);color:#fff;transform:translateY(-2px) scale(1.045)}.notfound-link .menu-icon{margin-right:10px}@media (max-width:768px){.nav-content{display:flex!important;align-items:center!important;flex-wrap:nowrap!important;width:100%!important;padding:0 1rem!important;box-sizing:border-box!important}.nav-logo{display:flex!important;align-items:center!important;margin-right:auto!important;font-size:1rem!important;gap:4px!important;text-align:left!important;margin-left:0!important;margin-top:0!important;margin-bottom:0!important;flex-shrink:0!important}.nav-logo img{max-width:32px!important;height:auto!important;display:block!important}.nav-menu{display:none}.nav-toggle{display:block!important;background:0 0!important;border:none!important;cursor:pointer!important;padding:.5rem!important;margin-left:0!important;z-index:1001!important;flex-shrink:0!important}.nav-toggle .hamburger-line{display:block;width:25px;height:3px;background-color:#fff;margin:5px 0;transition:transform .3s ease,opacity .3s ease}.nav-toggle[aria-expanded=true] .hamburger-line:first-child{transform:translateY(8px) rotate(45deg)}.nav-toggle[aria-expanded=true] .hamburger-line:nth-child(2){opacity:0}.nav-toggle[aria-expanded=true] .hamburger-line:nth-child(3){transform:translateY(-8px) rotate(-45deg)}#nav-menu-list{display:none;position:absolute;top:100%;left:0;right:0;background-color:var(--10x-blue);padding:1rem 0;z-index:1000;flex-direction:column}#nav-menu-list.active{display:flex}#nav-menu-list a{color:#fff;padding:1rem;text-align:center;text-decoration:none;border-bottom:1px solid rgba(255,255,255,.1)}#nav-menu-list a:last-child{border-bottom:none}#nav-menu-list a:hover{background-color:var(--10x-orange)}}@media (max-width:950px){.center{width:90vw;max-width:600px;min-width:220px;padding:1.2rem 1.4rem 2.1rem 1.4rem;margin:1px auto}}@media (max-width:600px){.center{width:80vw;max-width:600px;min-width:270px}.nav-content{flex-direction:column;align-items:center;gap:8px;padding:0 4vw}.nav-logo{flex-direction:row;justify-content:center;align-items:center;font-size:1.15rem;gap:7px;text-align:center;width:100%}.nav-logo img{height:30px}.nav-menu{display:flex;flex-direction:row;gap:18px;justify-content:center;width:100%}.nav-menu a{font-size:1rem;margin-left:0;margin-right:0;padding:0 1px}.main-container{flex-direction:column;gap:20px;padding-top:40px!important;margin-top:40px!important;min-height:unset}.wrapper-main{padding-top:40px!important;margin-top:40px!important}.book-cover{min-width:0;max-width:100vw;width:90vw;padding:2px;margin:0 auto 12px auto;box-sizing:border-box}.book-cover img{max-width:100%;height:auto;border-radius:8px;display:block}.info-block{max-width:80vw;padding:0}.notfound-card{max-width:98vw;padding:1.3rem 3vw}.notfound-logo{width:38px;height:38px}.notfound-code{font-size:2.2rem}.hamburger-line{width:28px;height:3.5px;background:#fff;margin:3px 0;border-radius:3px;display:block;transition:all .18s}}