/* === Reset & Base === */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:'Inter','system-ui','Segoe UI',sans-serif;font-weight:400;line-height:1.6;background:#121212;color:#FFFFFF;min-height:100vh;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:#E53935;text-decoration:none;transition:color 0.2s ease}
a:hover{color:#FFC107}
a:focus-visible{outline:2px solid #FFC107;outline-offset:2px;border-radius:4px}
ul,ol{list-style:none}
button{cursor:pointer;font-family:inherit;border:none;background:none;color:inherit}
button:focus-visible{outline:2px solid #FFC107;outline-offset:2px;border-radius:8px}
/* === CSS Variables === */
:root{--color-primary:#E53935;--color-primary-hover:#c62828;--color-secondary:#1E1E1E;--color-accent:#FFC107;--color-accent-hover:#e6a800;--color-bg:#121212;--color-surface:#2A2A2A;--color-surface-hover:#333333;--color-text-primary:#FFFFFF;--color-text-secondary:#B0B0B0;--color-text-data:#FFC107;--color-border:rgba(255,255,255,0.08);--font-heading:'Playfair Display','Georgia',serif;--font-body:'Inter','system-ui','Segoe UI',sans-serif;--font-data:'Fira Code','Consolas','Courier New',monospace;--radius-sm:8px;--radius-md:12px;--radius-lg:20px;--radius-pill:9999px;--spacing-xs:0.25rem;--spacing-sm:0.5rem;--spacing-md:1rem;--spacing-lg:1.5rem;--spacing-xl:2rem;--spacing-2xl:3rem;--max-width:1200px;--header-height:64px;--transition-fast:0.15s ease;--transition-base:0.25s ease}
/* === Container === */
.container{width:100%;max-width:var(--max-width);margin:0 auto;padding-left:var(--spacing-lg);padding-right:var(--spacing-lg)}
@media(max-width:768px){.container{padding-left:var(--spacing-md);padding-right:var(--spacing-md)}}
/* === Skip Link === */
.skip-link{position:absolute;top:-100%;left:var(--spacing-md);background:#E53935;color:#fff;padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--radius-sm);z-index:2000;font-size:0.875rem;font-weight:600;transition:top 0.2s ease}
.skip-link:focus{top:var(--spacing-sm);outline:2px solid #FFC107;outline-offset:2px}
/* === Header === */
.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:linear-gradient(180deg,rgba(18,18,18,0.92) 0%,rgba(18,18,18,0.4) 60%,transparent 100%);padding:0;height:var(--header-height);transition:background 0.3s ease,box-shadow 0.3s ease;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px)}
.site-header[data-scrolled="true"]{background:rgba(18,18,18,0.96);box-shadow:0 2px 20px rgba(0,0,0,0.4);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:100%;position:relative}
/* === Brand === */
.brand{font-family:var(--font-heading);font-size:1.5rem;font-weight:700;color:#FFFFFF;letter-spacing:0.02em;text-decoration:none;transition:color 0.2s ease;position:relative;z-index:1001}
.brand:hover{color:#E53935}
.brand::after{content:"HB";font-family:var(--font-data);font-size:0.625rem;font-weight:400;color:#FFC107;margin-left:0.375rem;vertical-align:super;letter-spacing:0.04em;opacity:0.8}
/* === Nav Toggle === */
.nav-toggle{display:none;flex-direction:column;justify-content:center;align-items:center;width:44px;height:44px;gap:5px;background:transparent;border:none;cursor:pointer;padding:8px;border-radius:var(--radius-sm);transition:background 0.2s ease;z-index:1001}
.nav-toggle:hover{background:rgba(255,255,255,0.06)}
.nav-toggle-bar{display:block;width:24px;height:2px;background:#FFFFFF;border-radius:2px;transition:transform 0.3s ease,opacity 0.3s ease;transform-origin:center}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
/* === Nav === */
.nav{display:flex;align-items:center}
.nav-list{display:flex;align-items:center;gap:var(--spacing-xs)}
.nav-link{display:inline-block;padding:0.5rem 1rem;font-family:var(--font-body);font-size:0.875rem;font-weight:500;color:#B0B0B0;text-decoration:none;border-radius:var(--radius-pill);transition:color 0.2s ease,background 0.2s ease;position:relative;letter-spacing:0.02em}
.nav-link:hover{color:#FFFFFF;background:rgba(255,255,255,0.06)}
.nav-link[aria-current="page"]{color:#FFFFFF;background:rgba(229,57,53,0.2);font-weight:600}
.nav-link[aria-current="page"]::after{content:'';position:absolute;bottom:2px;left:50%;transform:translateX(-50%);width:16px;height:2px;background:#E53935;border-radius:2px}
/* === Mobile Nav === */
@media(max-width:768px){
  .nav-toggle{display:flex}
  .nav{position:fixed;top:0;left:0;width:100%;height:100vh;background:rgba(18,18,18,0.98);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);flex-direction:column;align-items:center;justify-content:center;opacity:0;visibility:hidden;transform:translateY(-8px);transition:opacity 0.35s ease,visibility 0.35s ease,transform 0.35s ease;pointer-events:none}
  .nav[data-open]{opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto}
  .nav-list{flex-direction:column;align-items:center;gap:var(--spacing-lg)}
  .nav-link{font-size:1.25rem;padding:0.75rem 2rem;color:#B0B0B0}
  .nav-link:hover{color:#FFFFFF;background:rgba(255,255,255,0.06)}
  .nav-link[aria-current="page"]{color:#FFFFFF;background:rgba(229,57,53,0.15)}
}
/* === Scroll Progress === */
[data-scroll-progress]{position:fixed;top:0;left:0;width:100%;height:3px;z-index:999;background:rgba(255,255,255,0.06);pointer-events:none}
[data-scroll-progress-bar]{height:100%;width:0%;background:linear-gradient(90deg,#E53935,#FFC107);border-radius:0 2px 2px 0;transition:width 0.1s linear}
@media(prefers-reduced-motion:reduce){[data-scroll-progress-bar]{transition:none}}
/* === Scroll Top Button === */
.scroll-top-btn{position:fixed;bottom:2rem;right:2rem;z-index:900;width:48px;height:48px;border-radius:50%;background:#E53935;color:#FFFFFF;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 16px rgba(229,57,53,0.35);opacity:0;visibility:hidden;transform:translateY(12px);transition:opacity 0.3s ease,visibility 0.3s ease,transform 0.3s ease,background 0.2s ease;cursor:pointer;border:2px solid transparent}
.scroll-top-btn:hover{background:#c62828;box-shadow:0 6px 24px rgba(229,57,53,0.45)}
.scroll-top-btn:focus-visible{outline:2px solid #FFC107;outline-offset:2px}
.scroll-top-btn[data-visible]{opacity:1;visibility:visible;transform:translateY(0)}
@media(max-width:768px){.scroll-top-btn{bottom:1.25rem;right:1.25rem;width:44px;height:44px}}
@media(prefers-reduced-motion:reduce){.scroll-top-btn{transition:opacity 0.1s ease,visibility 0.1s ease}}
/* === Footer === */
.site-footer{background:#1E1E1E;border-top:1px solid rgba(255,255,255,0.04);padding:var(--spacing-2xl) 0 var(--spacing-xl);margin-top:var(--spacing-2xl);color:#B0B0B0}
.footer-inner{display:grid;grid-template-columns:1.5fr 1fr 1.2fr 1fr;gap:var(--spacing-xl)}
.footer-column{display:flex;flex-direction:column;gap:var(--spacing-md)}
.footer-logo{font-family:var(--font-heading);font-size:1.375rem;font-weight:700;color:#FFFFFF;text-decoration:none;display:inline-block}
.footer-logo:hover{color:#E53935}
.footer-desc{font-size:0.875rem;line-height:1.7;color:#B0B0B0;max-width:32ch}
.footer-version{font-family:var(--font-data);font-size:0.75rem;color:rgba(255,255,255,0.3);margin-top:auto;letter-spacing:0.04em}
.footer-heading{font-family:var(--font-body);font-size:0.75rem;font-weight:600;color:#FFFFFF;text-transform:uppercase;letter-spacing:0.08em;margin-bottom:var(--spacing-sm);opacity:0.6}
.footer-nav-list,.footer-contact-list,.footer-legal-list{display:flex;flex-direction:column;gap:var(--spacing-sm)}
.footer-link{font-size:0.875rem;color:#B0B0B0;text-decoration:none;transition:color 0.2s ease;display:inline-block}
.footer-link:hover{color:#FFC107}
.footer-contact-list li{font-size:0.875rem;color:#B0B0B0;line-height:1.6}
.footer-contact-note{font-size:0.75rem;opacity:0.7;max-width:28ch;margin-top:var(--spacing-xs);font-style:italic}
.footer-icp{font-family:var(--font-data);font-size:0.75rem;color:rgba(255,255,255,0.25);margin-top:var(--spacing-sm);letter-spacing:0.02em}
.footer-copy{font-size:0.75rem;color:rgba(255,255,255,0.25);margin-top:var(--spacing-xs)}
@media(max-width:1024px){.footer-inner{grid-template-columns:1fr 1fr;gap:var(--spacing-lg)}}
@media(max-width:640px){.footer-inner{grid-template-columns:1fr;gap:var(--spacing-lg)}.footer-column{gap:var(--spacing-sm)}}
/* === Buttons === */
.btn{display:inline-flex;align-items:center;justify-content:center;padding:0.625rem 1.5rem;font-family:var(--font-body);font-size:0.875rem;font-weight:600;border-radius:var(--radius-pill);transition:background 0.2s ease,transform 0.15s ease,box-shadow 0.2s ease;cursor:pointer;text-decoration:none;border:2px solid transparent;gap:0.5rem;line-height:1.4}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn:focus-visible{outline:2px solid #FFC107;outline-offset:2px;border-radius:var(--radius-pill)}
.btn-primary{background:#E53935;color:#FFFFFF;border-color:#E53935}
.btn-primary:hover{background:#c62828;border-color:#c62828;box-shadow:0 4px 16px rgba(229,57,53,0.3)}
.btn-accent{background:#FFC107;color:#121212;border-color:#FFC107}
.btn-accent:hover{background:#e6a800;border-color:#e6a800;box-shadow:0 4px 16px rgba(255,193,7,0.3)}
.btn-outline{background:transparent;color:#FFFFFF;border-color:rgba(255,255,255,0.2)}
.btn-outline:hover{background:rgba(255,255,255,0.06);border-color:rgba(255,255,255,0.4)}
/* === Cards === */
.card{background:#2A2A2A;border-radius:var(--radius-md);padding:var(--spacing-lg);border:1px solid rgba(255,255,255,0.04);transition:transform 0.2s ease,box-shadow 0.2s ease,border-color 0.2s ease}
.card:hover{transform:translateY(-2px);box-shadow:0 8px 32px rgba(0,0,0,0.3);border-color:rgba(229,57,53,0.15)}
@media(prefers-reduced-motion:reduce){.card:hover{transform:none}}
/* === Tags === */
.tag{display:inline-flex;align-items:center;padding:0.25rem 0.75rem;font-family:var(--font-body);font-size:0.75rem;font-weight:500;border-radius:var(--radius-pill);background:rgba(255,255,255,0.06);color:#B0B0B0;transition:background 0.2s ease,color 0.2s ease}
.tag-accent{background:rgba(255,193,7,0.12);color:#FFC107}
.tag-accent:hover{background:rgba(255,193,7,0.2)}
.tag-primary{background:rgba(229,57,53,0.12);color:#E53935}
.tag-primary:hover{background:rgba(229,57,53,0.2)}
/* === Grid === */
.grid{display:grid;gap:var(--spacing-lg)}
.grid-2{grid-template-columns:1fr 1fr}
.grid-3{grid-template-columns:1fr 1fr 1fr}
@media(max-width:768px){.grid-2,.grid-3{grid-template-columns:1fr}}
@media(min-width:769px)and(max-width:1024px){.grid-3{grid-template-columns:1fr 1fr}}
/* === Section Titles === */
.section-title{font-family:var(--font-heading);font-size:2rem;font-weight:700;color:#FFFFFF;line-height:1.15;margin-bottom:var(--spacing-sm);letter-spacing:-0.01em}
.section-subtitle{font-family:var(--font-body);font-size:0.938rem;color:#B0B0B0;font-weight:400;line-height:1.6;margin-bottom:var(--spacing-lg);max-width:54ch}
@media(max-width:768px){.section-title{font-size:1.625rem}}
/* === Breadcrumb === */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:var(--spacing-xs);padding:var(--spacing-md) 0;font-size:0.8125rem;color:#B0B0B0}
.breadcrumb a{color:#B0B0B0;text-decoration:none;transition:color 0.2s ease}
.breadcrumb a:hover{color:#FFC107}
.breadcrumb .breadcrumb-sep{color:rgba(255,255,255,0.2);margin:0 0.25rem;user-select:none}
.breadcrumb .breadcrumb-current{color:#E53935;font-weight:500}
/* === Timeline === */
.timeline{position:relative;display:flex;flex-direction:column;gap:var(--spacing-lg);padding-left:var(--spacing-xl)}
.timeline::before{content:'';position:absolute;top:4px;left:8px;width:2px;height:calc(100% - 8px);background:rgba(229,57,53,0.2);border-radius:2px}
.timeline-item{position:relative;padding-bottom:var(--spacing-md)}
.timeline-item::before{content:'';position:absolute;top:6px;left:calc(-1 * var(--spacing-xl) + 4px);width:10px;height:10px;border-radius:50%;background:#E53935;border:2px solid #121212;z-index:1}
.timeline-date{font-family:var(--font-data);font-size:0.75rem;color:#FFC107;letter-spacing:0.03em;margin-bottom:var(--spacing-xs);opacity:0.9}
.timeline-content{background:#2A2A2A;border-radius:var(--radius-md);padding:var(--spacing-md) var(--spacing-lg);border:1px solid rgba(255,255,255,0.04)}
.timeline-content h3{font-family:var(--font-heading);font-size:1.125rem;color:#FFFFFF;margin-bottom:var(--spacing-xs)}
.timeline-content p{font-size:0.875rem;color:#B0B0B0;line-height:1.6}
/* === Data Card === */
.data-card{background:#2A2A2A;border-radius:var(--radius-md);padding:var(--spacing-md) var(--spacing-lg);border:1px solid rgba(255,255,255,0.04);display:flex;flex-direction:column;gap:var(--spacing-xs)}
.data-label{font-size:0.75rem;font-weight:500;color:#B0B0B0;text-transform:uppercase;letter-spacing:0.05em}
.data-value{font-family:var(--font-data);font-size:1.75rem;font-weight:600;color:#FFC107;line-height:1.2}
.data-value.delta{font-size:1rem;color:#E53935}
/* === Sidenote === */
.sidenote{font-size:0.8125rem;color:#B0B0B0;line-height:1.7;padding:var(--spacing-md) var(--spacing-lg);border-left:2px solid rgba(255,193,7,0.3);background:rgba(255,193,7,0.03);border-radius:0 var(--radius-sm) var(--radius-sm) 0;margin:var(--spacing-lg) 0}
.sidenote strong{color:#FFFFFF;font-weight:600}
/* === Related === */
.related{display:flex;flex-wrap:wrap;gap:var(--spacing-sm);padding:var(--spacing-md) 0}
.related a{font-size:0.875rem;color:#E53935;text-decoration:none;padding:0.375rem 1rem;border:1px solid rgba(229,57,53,0.15);border-radius:var(--radius-pill);transition:background 0.2s ease,border-color 0.2s ease,color 0.2s ease}
.related a:hover{background:rgba(229,57,53,0.1);border-color:rgba(229,57,53,0.3);color:#FFC107}
/* === Container for main content === */
.main-content{min-height:calc(100vh - 300px);padding-top:calc(var(--header-height) + var(--spacing-lg));padding-bottom:var(--spacing-2xl)}
/* === Utility === */
.text-center{text-align:center}
.text-accent{color:#FFC107}
.text-primary{color:#E53935}
.mt-lg{margin-top:var(--spacing-lg)}
.mb-lg{margin-bottom:var(--spacing-lg)}
.mt-xl{margin-top:var(--spacing-xl)}
.mb-xl{margin-bottom:var(--spacing-xl)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}
/* === Focus Visible === */
:focus-visible{outline:2px solid #FFC107;outline-offset:2px;border-radius:4px}
/* === Reduced Motion === */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:0.01ms!important;animation-duration:0.01ms!important;animation-iteration-count:1!important;scroll-behavior:auto!important}
  .card:hover{transform:none!important}
  .btn:hover{transform:none!important}
  .site-header{transition:none!important}
  .nav{transition:none!important}
}
/* === Print === */
@media print{
  .site-header{position:relative;background:#121212;backdrop-filter:none;-webkit-backdrop-filter:none}
  [data-scroll-progress],.scroll-top-btn,.nav-toggle{display:none!important}
  .nav{opacity:1!important;visibility:visible!important;position:relative!important;height:auto!important;transform:none!important;background:none!important;backdrop-filter:none!important}
  .nav-list{flex-direction:row!important;gap:0.5rem!important}
  .site-footer{break-inside:avoid}
}