:root{--font-sans:system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;--colour-text-primary:#1f2937;--colour-text-strong:#111827;--colour-text-secondary:#374151;--colour-text-muted:#6b7280;--colour-text-faint:#4b5563;--colour-surface-hover:#f8fafc;--colour-accent:#3b82f6;--colour-divider:#e5e7eb;--gradient-accent:linear-gradient(135deg, #3972cd 0%, #3a6ddc 100%);--shadow-sm:0 4px 12px #0f172a0f;--shadow-md:0 10px 35px #0f172a14;--blur-md:12px;--radius-sm:12px;--radius-md:16px;--radius-lg:20px;--radius-pill:999px;--space-1:.25rem;--space-2:.5rem;--space-3:.75rem;--space-4:1rem;--space-5:1.25rem;--space-6:1.5rem;--space-7:2.5rem;--colour-surface-solid-opaque:#fff;--ease-standard:cubic-bezier(.4, 0, .2, 1);--transition-fast:.2s var(--ease-standard);--transition-base:.3s ease;--transition-panel:.35s var(--ease-standard);--z-sticky:1000;--z-sticky-below:999;--bp-tablet:768px;--bp-mobile:480px}*{font-family:var(--font-sans);scroll-behavior:smooth}:root{--navbar-bg:#ffffffeb;--navbar-border:#e2e8f0cc;--navbar-shadow:var(--shadow-md);--navbar-link-colour:var(--colour-text-primary);--navbar-link-hover-bg:#0000000f;--navbar-link-hover-colour:var(--colour-text-strong);--navbar-link-active-bg:#3b82f61a;--navbar-link-active-colour:var(--colour-accent);--navbar-icon-link-bg:#0f172a0a;--navbar-focus-ring:#3b82f647;--navbar-toggle-bg:#0f172a0a;--navbar-toggle-hover-bg:#0f172a14;--navbar-mobile-menu-bg:#fffffffa}#navbar{background:var(--navbar-bg);-webkit-backdrop-filter:blur(var(--blur-md));box-shadow:var(--navbar-shadow);border:1px solid var(--navbar-border);border-radius:var(--radius-lg);padding:var(--space-3) var(--space-5);max-width:98vw;margin:var(--space-4) auto 1.4rem;z-index:var(--z-sticky);transition:all var(--transition-base);justify-content:space-between;align-items:center;gap:var(--space-4);flex-wrap:wrap;display:flex;position:sticky;top:15px}.nav-sides{align-items:center;gap:var(--space-7);display:flex}#left-nav-side{flex:1;justify-content:flex-start;align-items:center;display:flex}#right-nav-side{justify-content:flex-end;gap:var(--space-6);flex:1}#navbar-logo-container{margin-right:var(--space-6)}#navbar-logo-image{object-fit:contain;width:auto;height:3.4rem;display:block}.navbar-list{align-items:center;gap:var(--space-2);margin:0;padding:0;list-style:none;display:flex}#login-register-navbar-list{gap:var(--space-3)}.navbar-item{list-style:none}.navbar-link{color:var(--navbar-link-colour);padding:1px var(--space-5);border-radius:var(--radius-sm);transition:all var(--transition-fast);white-space:nowrap;align-items:center;min-height:44px;font-size:clamp(1rem,1.05vw,1.1rem);font-weight:500;text-decoration:none;display:flex}.navbar-link:hover{background-color:var(--navbar-link-hover-bg);color:var(--navbar-link-hover-colour);transform:translateY(-1px)}.github-icon-link{padding:.1rem var(--space-4);background-color:var(--navbar-icon-link-bg);flex-direction:row;align-items:center;gap:10px;display:inline-flex}.github-icon-link svg{width:25px;height:25px;display:block}.navbar-link:focus-visible,.about-group-header-button:focus-visible,#hero-create-account-button:focus-visible,#mobile-menu-toggle:focus-visible,.mobile-menu-link:focus-visible{outline:3px solid var(--navbar-focus-ring);outline-offset:2px}.navbar-link:active{transform:scale(.97)}.navbar-link.active{background-color:var(--navbar-link-active-bg);color:var(--navbar-link-active-colour);font-weight:600}#mobile-menu-toggle{width:44px;height:44px;padding:var(--space-2);background-color:var(--navbar-toggle-bg);border-radius:var(--radius-sm);color:var(--navbar-link-colour);cursor:pointer;transition:background-colour var(--transition-fast);border:none;justify-content:center;align-items:center;display:none}#mobile-menu-toggle:hover{background-color:var(--navbar-toggle-hover-bg)}#mobile-menu-toggle .icon-close,#mobile-menu-toggle.open .icon-hamburger{display:none}#mobile-menu-toggle.open .icon-close{display:block}#mobile-menu{background:var(--navbar-mobile-menu-bg);border:1px solid var(--navbar-border);border-radius:var(--radius-lg);max-width:98vw;box-shadow:var(--navbar-shadow);opacity:0;max-height:0;transition:max-height var(--transition-panel), opacity .25s ease;z-index:var(--z-sticky-below);margin:-.75rem auto 1.4rem;display:none;position:sticky;top:15px;overflow:hidden}#mobile-menu.open{opacity:1;max-height:400px}#mobile-menu-list{padding:var(--space-2);gap:var(--space-1);flex-direction:column;margin:0;list-style:none;display:flex}.mobile-menu-link{padding:.85rem var(--space-4);border-radius:var(--radius-sm);color:var(--navbar-link-colour);text-align:center;transition:background-colour var(--transition-fast);font-size:1rem;font-weight:500;text-decoration:none;display:block}.mobile-menu-link:hover{background-color:var(--navbar-link-hover-bg)}.mobile-menu-link-primary{background:var(--gradient-accent);color:#fff;text-align:center;font-weight:600}.mobile-menu-link-primary:hover{background:var(--gradient-accent);opacity:.92}.mobile-menu-divider{height:1px;margin:.4rem var(--space-2);background:var(--colour-divider)}@media (width<=768px){#navbar{padding:.65rem var(--space-4);border-radius:0;max-width:100%;position:static;top:0}#navbar-logo-image{height:2.6rem}.nav-sides{gap:var(--space-4)}#left-nav-side,#right-nav-side{justify-content:center}#about-navbar-list,#login-register-navbar-list{display:none}#mobile-menu-toggle{display:flex}#mobile-menu{margin:-.75rem var(--space-4) 1.4rem;display:block;position:static}}@media (width<=480px){#navbar{padding:.55rem .8rem}#navbar-logo-image{height:2.3rem}#mobile-menu{margin:-.75rem .8rem 1.4rem}}:root{--hero-radius:24px;--hero-shadow:0 24px 70px #0f172a2e;--hero-overlay-bg:#1b1f2580;--hero-image-url:url(https://images.crestr.co.uk/hero-image.jpg);--hero-text-colour:#fff;--hero-subtitle-colour:#ffffffe6;--hero-cta-shadow:0 14px 30px -12px #2563eb80;--hero-cta-shadow-hover:0 12px 30px -10px #2563eb73;--hero-cta-transition:transform .2s ease-in-out, box-shadow 50ms ease-in-out}#hero-section{width:96%;max-width:2200px;margin:0 auto var(--space-7);border-radius:var(--hero-radius);height:min(78vh,760px);box-shadow:var(--hero-shadow);position:relative;overflow:hidden}#hero-image{background-image:var(--hero-image-url);background-position:50%;background-repeat:no-repeat;background-size:cover;width:100%;height:100%;inset:0}#hero-image:after{content:"";background:var(--hero-overlay-bg);position:absolute;inset:0}#hero-text-container{z-index:2;width:100%;height:100%;color:var(--hero-text-colour);padding:var(--space-4) var(--space-6);text-align:center;flex-direction:column;justify-content:center;align-items:center;display:flex;position:absolute;inset:0}#hero-text-container h1{margin:0}.hero-text{color:var(--hero-text-colour);pointer-events:none;letter-spacing:-.02em;font-size:clamp(1.8rem,7vw,5rem);line-height:1.05}.hero-subtitle{margin:var(--space-4) 0 0;color:var(--hero-subtitle-colour);max-width:600px;font-size:clamp(1rem,1.35vw,1.2rem);line-height:1.6}#bottom-hero-text{font-size:clamp(1.55rem,5.5vw,4rem);font-style:italic;font-weight:500;line-height:1.1}.cta-button{margin-top:var(--space-5);height:clamp(10px,3.8rem,100px);padding:var(--space-4) var(--space-6);width:50%;max-width:250px;min-height:56px;font-size:1.2rem}:root{--btn-shadow:0 14px 30px -12px #2563eb80;--btn-shadow-hover:0 12px 30px -10px #2563eb73;--btn-transition:transform .2s ease-in-out, box-shadow 50ms ease-in-out}.button{background:var(--gradient-accent);color:#fff;border-radius:var(--radius-pill);padding:var(--space-3) var(--space-5);text-align:center;cursor:pointer;transition:var(--btn-transition);box-shadow:var(--btn-shadow);border:none;justify-content:center;align-items:center;font-size:1rem;font-weight:700;display:inline-flex}.button:hover{box-shadow:var(--btn-shadow-hover);transform:translateY(-3px)}.button:active{box-shadow:none;transform:translateY(3px)}.button:disabled{opacity:.8;box-shadow:none;cursor:default;transform:none}:root{--feature-card-shadow:0 10px 30px #0f172a0f;--feature-image-shadow:0 4px 12px #00000014}#feature-section{max-width:1200px;padding:var(--space-4) var(--space-4) 4rem;margin:0 auto}.feature-block{gap:var(--space-6);background:var(--colour-surface-solid-opaque);border-radius:var(--radius-lg);box-shadow:var(--feature-card-shadow);border:1px solid var(--colour-divider);margin:var(--space-6) 0;flex-direction:column;padding:2.5rem;display:flex}.feature-heading{color:var(--colour-text-primary);text-align:center;margin:0;font-size:clamp(1.8rem,2.5vw,2.6rem);font-weight:700}.feature-image{justify-content:center;width:100%;display:flex}.feature-image img{border-radius:var(--radius-md);object-fit:cover;width:100%;max-width:500px;height:auto;box-shadow:var(--feature-image-shadow)}.feature-description{color:var(--colour-text-secondary);text-align:center;font-size:clamp(1rem,1.2vw,1.25rem);line-height:1.6}#feature-heading{color:var(--colour-text-primary);text-align:center;margin-top:7rem;margin-bottom:3.5rem;font-size:clamp(2.2rem,2.5vw,3.2rem);font-weight:700}:root{--about-group-shadow:0 4px 15px #00000012;--about-group-shadow-hover:0 10px 30px #0000001f;--about-transition-lift:box-shadow .3s ease, transform .3s ease;--about-accordion-transition:max-height .45s var(--ease-standard), opacity .35s ease 50ms, padding-bottom .45s var(--ease-standard)}#about-section{flex-direction:column;justify-content:center;align-items:center;display:flex}#about-heading{color:var(--colour-text-primary);text-align:center;margin-bottom:3.5rem;font-size:clamp(2.2rem,2.5vw,3.2rem);font-weight:700}.about-group-container{width:100%;max-width:800px;margin-bottom:var(--space-4);justify-content:center;align-items:center;display:flex}.about-group{background:var(--colour-surface-solid-opaque);border-radius:var(--radius-md);width:100%;box-shadow:var(--about-group-shadow);border:1px solid var(--colour-divider);transition:var(--about-transition-lift);overflow:hidden}.about-group:hover{box-shadow:var(--about-group-shadow-hover);transform:translateY(-3px)}.about-group-header-button{width:100%;padding:var(--space-5) var(--space-6);background:var(--colour-surface-solid-opaque);cursor:pointer;border:none;justify-content:space-between;align-items:center;min-height:60px;font-size:.8rem;transition:background-colour .25s;display:flex}.about-group-header-button:hover{background-color:var(--colour-surface-hover)}.about-group-header{color:var(--colour-text-primary);text-align:left;flex:1;margin:0;font-weight:600}.about-group-header-button svg{width:26px;height:26px;stroke:var(--colour-text-faint);transition:transform .4s var(--ease-standard);flex-shrink:0}.about-group-text{padding:0 var(--space-6) 0;color:var(--colour-text-secondary);opacity:0;max-height:0;transition:var(--about-accordion-transition);line-height:1.65;overflow:hidden}.about-group.open .about-group-text{opacity:1;max-height:800px;padding-bottom:var(--space-6)}.about-group.open svg{transform:rotate(180deg)}@media (width<=768px){#about-section{padding:4rem var(--space-4) 5rem}.about-group-header-button{padding:1.1rem var(--space-5)}}@media (width<=480px){.about-group-container{margin-bottom:.75rem}.about-group-header-button{padding:var(--space-5) 1.1rem}#about-section{padding:3.5rem .8rem 4rem}}:root{--footer-bg:var(--colour-surface-solid-opaque);--footer-border-top:var(--colour-divider);--footer-heading-colour:var(--colour-text-primary);--footer-text-colour:var(--colour-text-secondary);--footer-link-colour:var(--colour-text-secondary);--footer-link-hover-colour:var(--colour-accent);--footer-icon-bg:var(--colour-wash-subtle,#0f172a0a);--footer-icon-hover-bg:var(--colour-surface-hover)}#footer{background:var(--footer-bg);border-top:1px solid var(--footer-border-top);padding:3.5rem var(--space-4) var(--space-6);margin-top:4rem;display:flex}#footer-inner{gap:var(--space-7);flex-direction:column;max-width:1200px;margin:0 auto;display:flex}#footer-top{justify-content:space-between;gap:var(--space-7);flex-wrap:wrap;display:flex}#footer-brand{gap:var(--space-3);flex-direction:column;max-width:320px;display:flex}#footer-logo-image{object-fit:contain;width:auto;height:2.4rem}.footer-blurb{color:var(--footer-text-colour);margin:0;font-size:.95rem;line-height:1.6}.footer-link-group{gap:var(--space-3);flex-direction:column;min-width:140px;display:flex}.footer-link-group-heading{text-transform:uppercase;letter-spacing:.04em;color:var(--footer-heading-colour);margin:0;font-size:.85rem;font-weight:700}.footer-link-list{gap:var(--space-2);flex-direction:column;margin:0;padding:0;list-style:none;display:flex}.footer-link{color:var(--footer-link-colour);transition:colour var(--transition-fast);font-size:.95rem;text-decoration:none}.footer-link:hover{color:var(--footer-link-hover-colour)}#footer-bottom{justify-content:space-between;align-items:center;gap:var(--space-4);padding-top:var(--space-6);border-top:1px solid var(--footer-border-top);flex-wrap:wrap;display:flex}.footer-copyright{color:var(--footer-text-colour);margin:0;font-size:.85rem}#footer-icon-list{align-items:center;gap:var(--space-2);margin:0;padding:0;list-style:none;display:flex}.footer-icon-link{border-radius:var(--radius-sm);background-color:var(--footer-icon-bg);width:40px;height:40px;color:var(--footer-text-colour);transition:background-colour var(--transition-fast), colour var(--transition-fast);justify-content:center;align-items:center;display:flex}.footer-icon-link:hover{background-color:var(--footer-icon-hover-bg);color:var(--footer-link-hover-colour)}.footer-icon-link svg{width:20px;height:20px;display:block}@media (width<=768px){#footer{padding:var(--space-7) var(--space-4) var(--space-6)}#footer-top{gap:var(--space-6);flex-direction:column}#footer-bottom{flex-direction:column;align-items:flex-start}}