:root{--wp-block-synced-color:#7a00df;--wp-block-synced-color--rgb:122,0,223;--wp-bound-block-color:var(--wp-block-synced-color);--wp-editor-canvas-background:#ddd;--wp-admin-theme-color:#007cba;--wp-admin-theme-color--rgb:0,124,186;--wp-admin-theme-color-darker-10:#006ba1;--wp-admin-theme-color-darker-10--rgb:0,107,160.5;--wp-admin-theme-color-darker-20:#005a87;--wp-admin-theme-color-darker-20--rgb:0,90,135;--wp-admin-border-width-focus:2px}@media (min-resolution:192dpi){:root{--wp-admin-border-width-focus:1.5px}}:root{--wp--preset--font-size--normal:16px;--wp--preset--font-size--huge:42px}.screen-reader-text{word-wrap:normal!important;border:0;clip-path:inset(50%);margin:-1px;padding:0}.screen-reader-text:focus{background-color:#ddd;clip-path:none;color:#444;display:block;font-size:1em;height:auto;left:5px;line-height:normal;padding:15px 23px 14px;text-decoration:none;top:5px;width:auto;z-index:100000}:root{--wp--preset--aspect-ratio--square:1;--wp--preset--aspect-ratio--4-3:4/3;--wp--preset--aspect-ratio--3-4:3/4;--wp--preset--aspect-ratio--3-2:3/2;--wp--preset--aspect-ratio--2-3:2/3;--wp--preset--aspect-ratio--16-9:16/9;--wp--preset--aspect-ratio--9-16:9/16;--wp--preset--color--black:#000000;--wp--preset--color--cyan-bluish-gray:#abb8c3;--wp--preset--color--white:#ffffff;--wp--preset--color--pale-pink:#f78da7;--wp--preset--color--vivid-red:#cf2e2e;--wp--preset--color--luminous-vivid-orange:#ff6900;--wp--preset--color--luminous-vivid-amber:#fcb900;--wp--preset--color--light-green-cyan:#7bdcb5;--wp--preset--color--vivid-green-cyan:#00d084;--wp--preset--color--pale-cyan-blue:#8ed1fc;--wp--preset--color--vivid-cyan-blue:#0693e3;--wp--preset--color--vivid-purple:#9b51e0;--wp--preset--color--physics-blue:#146EF5;--wp--preset--color--primary-navy:#0B1F3A;--wp--preset--color--science-cyan:#22C7E8;--wp--preset--color--dark-text:#172033;--wp--preset--color--light-background:#F7F9FC;--wp--preset--gradient--vivid-cyan-blue-to-vivid-purple:linear-gradient(135deg,rgb(6,147,227) 0%,rgb(155,81,224) 100%);--wp--preset--gradient--light-green-cyan-to-vivid-green-cyan:linear-gradient(135deg,rgb(122,220,180) 0%,rgb(0,208,130) 100%);--wp--preset--gradient--luminous-vivid-amber-to-luminous-vivid-orange:linear-gradient(135deg,rgb(252,185,0) 0%,rgb(255,105,0) 100%);--wp--preset--gradient--luminous-vivid-orange-to-vivid-red:linear-gradient(135deg,rgb(255,105,0) 0%,rgb(207,46,46) 100%);--wp--preset--gradient--very-light-gray-to-cyan-bluish-gray:linear-gradient(135deg,rgb(238,238,238) 0%,rgb(169,184,195) 100%);--wp--preset--gradient--cool-to-warm-spectrum:linear-gradient(135deg,rgb(74,234,220) 0%,rgb(151,120,209) 20%,rgb(207,42,186) 40%,rgb(238,44,130) 60%,rgb(251,105,98) 80%,rgb(254,248,76) 100%);--wp--preset--gradient--blush-light-purple:linear-gradient(135deg,rgb(255,206,236) 0%,rgb(152,150,240) 100%);--wp--preset--gradient--blush-bordeaux:linear-gradient(135deg,rgb(254,205,165) 0%,rgb(254,45,45) 50%,rgb(107,0,62) 100%);--wp--preset--gradient--luminous-dusk:linear-gradient(135deg,rgb(255,203,112) 0%,rgb(199,81,192) 50%,rgb(65,88,208) 100%);--wp--preset--gradient--pale-ocean:linear-gradient(135deg,rgb(255,245,203) 0%,rgb(182,227,212) 50%,rgb(51,167,181) 100%);--wp--preset--gradient--electric-grass:linear-gradient(135deg,rgb(202,248,128) 0%,rgb(113,206,126) 100%);--wp--preset--gradient--midnight:linear-gradient(135deg,rgb(2,3,129) 0%,rgb(40,116,252) 100%);--wp--preset--font-size--small:13px;--wp--preset--font-size--medium:20px;--wp--preset--font-size--large:36px;--wp--preset--font-size--x-large:42px;--wp--preset--spacing--20:0.44rem;--wp--preset--spacing--30:0.67rem;--wp--preset--spacing--40:1rem;--wp--preset--spacing--50:1.5rem;--wp--preset--spacing--60:2.25rem;--wp--preset--spacing--70:3.38rem;--wp--preset--spacing--80:5.06rem;--wp--preset--shadow--natural:6px 6px 9px rgba(0, 0, 0, 0.2);--wp--preset--shadow--deep:12px 12px 50px rgba(0, 0, 0, 0.4);--wp--preset--shadow--sharp:6px 6px 0px rgba(0, 0, 0, 0.2);--wp--preset--shadow--outlined:6px 6px 0px -3px rgb(255, 255, 255), 6px 6px rgb(0, 0, 0);--wp--preset--shadow--crisp:6px 6px 0px rgb(0, 0, 0);--pw-text:#172033;--pw-text-secondary:#5F6B7A;--pw-bg:#F7F9FC;--pw-card-bg:#FFFFFF;--pw-border:#E5EAF0;--pw-radius:14px;--pw-radius-sm:8px;--pw-shadow:0 1px 2px rgba(11,31,58,0.04);--pw-shadow-hover:0 8px 24px rgba(11,31,58,0.08);--pw-transition:200ms ease;--pw-container:1240px;--pw-article-width:760px;--pw-font-sans:Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif}:where(body){margin:0}body,ul{margin:0;padding:0}body{font-family:var(--pw-font-sans);color:var(--pw-text);background:var(--pw-bg);font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased}*,::after,::before{box-sizing:border-box}html{scroll-behavior:smooth}img{max-width:100%;height:auto;display:block}a{color:var(--pw-blue);text-decoration:none}ul{list-style:none}h1,h2,h3{margin:0 0 .5em;color:var(--pw-navy);font-weight:700;line-height:1.25}p{margin:0 0 1em}button{font-family:inherit;cursor:pointer}.screen-reader-text{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(1px,1px,1px,1px);white-space:nowrap}.pw-skip-link{position:absolute;left:8px;top:-60px;background:var(--pw-navy);color:#fff;padding:12px 18px;border-radius:var(--pw-radius-sm);z-index:10000;transition:top var(--pw-transition)}.pw-skip-link:focus{top:8px}:focus-visible{outline:3px solid var(--pw-blue);outline-offset:2px}.pw-container{max-width:var(--pw-container);margin:0 auto;padding:0 24px}.pw-section{padding:56px 0}.pw-btn,.pw-nav-menu>li>a{border-radius:999px;font-size:15px}.pw-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 26px;font-weight:600;border:1px solid transparent;transition:transform var(--pw-transition),box-shadow var(--pw-transition),background var(--pw-transition),color var(--pw-transition);min-height:44px}.pw-btn--primary{background:var(--pw-blue);color:#fff}.pw-btn--primary:hover{background:var(--pw-navy);transform:translateY(-1px)}.pw-btn--secondary{background:0 0;border-color:var(--pw-border);color:var(--pw-navy)}.pw-btn--secondary:hover{border-color:var(--pw-blue);color:var(--pw-blue)}.pw-site-header{position:sticky;top:0;z-index:500;background:rgba(255,255,255,.92);backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid var(--pw-border);transition:padding var(--pw-transition)}.pw-header-inner{display:flex;align-items:center;gap:24px;padding:16px 24px;position:relative}.pw-header-brand img{max-height:44px;width:auto}.pw-primary-nav{flex:1;display:flex;justify-content:center}.pw-nav-menu{display:flex;align-items:center;gap:6px;flex-wrap:wrap}.pw-nav-menu>li{position:relative}.pw-nav-menu>li>a{display:inline-block;padding:10px 14px;color:var(--pw-text);font-weight:500;transition:background var(--pw-transition),color var(--pw-transition)}.pw-nav-menu>li.current-menu-item>a,.pw-nav-menu>li>a:hover{background:rgba(20,110,245,.08);color:var(--pw-blue)}.pw-nav-menu .sub-menu{position:absolute;top:100%;left:0;min-width:220px;background:var(--pw-card-bg);border:1px solid var(--pw-border);border-radius:var(--pw-radius-sm);box-shadow:var(--pw-shadow-hover);padding:8px;opacity:0;visibility:hidden;transform:translateY(6px);transition:opacity var(--pw-transition),transform var(--pw-transition),visibility var(--pw-transition)}.pw-nav-menu li:focus-within>.sub-menu,.pw-nav-menu li:hover>.sub-menu{opacity:1;visibility:visible;transform:translateY(0)}.pw-nav-menu .sub-menu a{display:block;padding:9px 12px;border-radius:6px;color:var(--pw-text);font-size:14px}.pw-nav-menu .sub-menu a:hover{background:var(--pw-bg);color:var(--pw-blue)}.pw-header-actions{display:flex;align-items:center;gap:8px}.pw-icon-btn{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:999px;border:1px solid transparent;background:0 0;color:var(--pw-navy);transition:background var(--pw-transition)}.pw-icon-btn:hover{background:var(--pw-bg)}.pw-menu-toggle{display:none}.pw-header-search{position:absolute;right:24px;top:100%;margin-top:8px;width:340px;max-width:calc(100vw - 48px);background:var(--pw-card-bg);border:1px solid var(--pw-border);border-radius:var(--pw-radius);box-shadow:var(--pw-shadow-hover);padding:12px;opacity:0;visibility:hidden;transform:translateY(-6px);transition:opacity var(--pw-transition),transform var(--pw-transition),visibility var(--pw-transition)}.pw-mobile-panel{position:fixed;top:0;right:0;width:min(360px,92vw);height:100%;background:var(--pw-card-bg);box-shadow:-12px 0 32px rgba(11,31,58,.14);z-index:1000;transform:translateX(100%);transition:transform 260ms ease;overflow-y:auto}.pw-mobile-panel-inner{padding:20px}.pw-mobile-close{margin-left:auto;display:flex}.pw-mobile-search{margin:16px 0 24px}.pw-mobile-menu li a{display:block;padding:14px 8px;border-bottom:1px solid var(--pw-border);font-weight:500;font-size:16px;color:var(--pw-text);min-height:44px}.pw-mobile-menu .sub-menu{padding-left:16px}.pw-mobile-overlay{position:fixed;inset:0;background:rgba(11,31,58,.4);z-index:900;opacity:0;visibility:hidden;transition:opacity var(--pw-transition),visibility var(--pw-transition)}.pw-hero{padding:64px 0 32px}.pw-hero-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}.pw-eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--pw-blue);text-transform:uppercase;margin-bottom:14px}.pw-hero-copy h1{font-size:clamp(32px,4.2vw,52px);letter-spacing:-.02em;margin-bottom:18px}.pw-hero-copy p{font-size:18px;color:var(--pw-text-secondary);max-width:46ch;margin-bottom:28px}.pw-hero-actions{display:flex;flex-wrap:wrap;gap:12px}.pw-hero-art svg{width:100%;height:auto}.pw-section-heading{margin-bottom:32px;max-width:640px}.pw-section-heading h2{font-size:clamp(26px,3vw,34px);margin-bottom:8px}.pw-section-heading p{color:var(--pw-text-secondary);margin:0}.pw-section-heading--center{margin-left:auto;margin-right:auto;text-align:center}.pw-topic-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.pw-topic-card{position:relative;display:flex;flex-direction:column;gap:8px;background:var(--pw-card-bg);border:1px solid var(--pw-border);border-radius:var(--pw-radius);padding:22px;color:var(--pw-text);transition:transform var(--pw-transition),border-color var(--pw-transition),box-shadow var(--pw-transition)}.pw-topic-card:hover{transform:translateY(-2px);border-color:var(--pw-blue);box-shadow:var(--pw-shadow-hover)}.pw-topic-card .pw-icon{width:26px;height:26px;color:var(--pw-blue)}.pw-topic-title{font-weight:700;color:var(--pw-navy);font-size:17px}.pw-topic-count{font-size:13px;color:var(--pw-text-secondary);margin-top:6px}.pw-topic-arrow{position:absolute;top:22px;right:20px;color:var(--pw-blue);opacity:0;transform:translateX(-4px);transition:opacity var(--pw-transition),transform var(--pw-transition)}.pw-topic-card:hover .pw-topic-arrow{opacity:1;transform:translateX(0)}.pw-card-grid{display:grid;gap:24px}.pw-card-grid,.pw-card-grid--3{grid-template-columns:repeat(3,1fr)}.pw-card{background:var(--pw-card-bg);border:1px solid var(--pw-border);border-radius:var(--pw-radius);overflow:hidden;transition:transform var(--pw-transition),border-color var(--pw-transition),box-shadow var(--pw-transition)}.pw-card:hover{border-color:var(--pw-blue)}.pw-card-link{display:block;color:inherit}.pw-card-media{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--pw-bg)}.pw-card-media img{width:100%;height:100%;object-fit:cover}.pw-card-body{padding:18px 20px 20px}.pw-card-category{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--pw-blue);margin-bottom:8px}.pw-card-title{font-size:19px;margin-bottom:8px}.pw-card-excerpt{color:var(--pw-text-secondary);font-size:15px;margin-bottom:12px}.pw-card-meta,.pw-formula-card p{font-size:13px;color:var(--pw-text-secondary)}.pw-card-meta{display:flex;align-items:center;gap:6px}.pw-dot{opacity:.6}.pw-featured-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:24px;align-items:start}.pw-featured-main{background:var(--pw-card-bg);border:1px solid var(--pw-border);border-radius:var(--pw-radius);overflow:hidden;transition:transform var(--pw-transition),box-shadow var(--pw-transition)}.pw-card:hover,.pw-featured-main:hover{transform:translateY(-2px);box-shadow:var(--pw-shadow-hover)}.pw-featured-main .pw-card-media{aspect-ratio:16/10}.pw-featured-main .pw-card-title{font-size:24px}.pw-featured-side{display:grid;gap:20px}.pw-featured-side .pw-card,.pw-featured-side .pw-card-link{display:grid;grid-template-columns:120px 1fr}.pw-featured-side .pw-card-media{aspect-ratio:1/1}.pw-featured-side .pw-card-body{padding:12px 16px}.pw-featured-side .pw-card-title{font-size:16px}.pw-featured-side .pw-card-excerpt{display:none}.pw-popular-grid{display:flex;flex-wrap:wrap;gap:12px}.pw-popular-pill{padding:10px 18px;border-radius:999px;background:var(--pw-card-bg);border:1px solid var(--pw-border);color:var(--pw-text);font-size:14px;font-weight:500;transition:border-color var(--pw-transition),color var(--pw-transition),transform var(--pw-transition)}.pw-popular-pill:hover{border-color:var(--pw-blue);color:var(--pw-blue);transform:translateY(-1px)}.pw-formula-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:8px}.pw-formula-card{background:var(--pw-card-bg);border:1px solid var(--pw-border);border-radius:var(--pw-radius);padding:24px 20px;text-align:center;transition:transform var(--pw-transition),box-shadow var(--pw-transition)}.pw-formula-card:hover{transform:translateY(-2px);box-shadow:var(--pw-shadow-hover)}.pw-formula-eq{display:block;font-family:"Cambria Math",Georgia,serif;font-size:26px;font-weight:700;color:var(--pw-navy);margin-bottom:8px}.pw-formula-name{display:block;font-weight:600;color:var(--pw-blue);font-size:14px;margin-bottom:6px}.pw-formula-card p{margin:0}.pw-load-more-wrap{text-align:center;margin-top:32px}.pw-site-footer{background:var(--pw-navy);color:#c9d3e3;padding:56px 0 24px;margin-top:64px}.pw-footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.12)}.pw-footer-brand img{filter:brightness(0) invert(1);max-height:40px}.pw-footer-brand p{margin-top:14px;font-size:14px;color:#9fb0cc;max-width:30ch}.pw-footer-col h3{color:#fff;font-size:14px;text-transform:uppercase;letter-spacing:.06em;margin-bottom:16px}.pw-footer-menu{display:grid;gap:10px}.pw-footer-menu a{color:#c9d3e3;font-size:14.5px}.pw-footer-menu a:hover{color:#fff}.pw-footer-bottom{padding-top:24px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:13.5px;color:#8fa0bc}.pw-search-form{display:flex;gap:8px}.pw-search-input{flex:1;min-height:44px;padding:0 16px;border:1px solid var(--pw-border);border-radius:999px;font-size:15px;background:var(--pw-bg)}.pw-search-submit{width:44px;height:44px;border-radius:50%;border:1px solid var(--pw-border);background:var(--pw-card-bg);color:var(--pw-navy)}.pw-search-submit:hover{background:var(--pw-blue);color:#fff;border-color:var(--pw-blue)}.pw-header-search .pw-search-form,.pw-mobile-search .pw-search-form{display:flex}@media (prefers-reduced-motion:reduce){*,::after,::before{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}}@media (max-width:1080px){.pw-topic-grid{grid-template-columns:repeat(3,1fr)}.pw-formula-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width:960px){.pw-primary-nav{display:none}.pw-menu-toggle{display:inline-flex}.pw-featured-grid,.pw-hero-inner{grid-template-columns:1fr}.pw-featured-side .pw-card,.pw-featured-side .pw-card-link{grid-template-columns:96px 1fr}.pw-hero-inner{text-align:left}.pw-hero-art{order:-1;max-width:320px}.pw-card-grid--3{grid-template-columns:repeat(2,1fr)}.pw-footer-grid{grid-template-columns:1fr 1fr}}@media (max-width:680px){body{font-size:16px}.pw-container{padding:0 18px}.pw-topic-grid{grid-template-columns:repeat(2,1fr)}.pw-card-grid--3,.pw-footer-grid,.pw-formula-grid{grid-template-columns:1fr}.pw-header-search{right:12px;width:calc(100vw - 24px)}}@media (max-width:420px){.pw-hero-copy h1{font-size:30px}}:root{--pw-navy:#0B1F3A;--pw-blue:#146EF5;--pw-cyan:#22C7E8;--pw-accent:#16A085}