/* ===== RESET ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px;-webkit-text-size-adjust:100%}
body{min-height:100vh;overflow-x:hidden;background:var(--color-bg);color:var(--color-text);font-family:'Inter',system-ui,-apple-system,sans-serif;font-weight:400;line-height:1.6}
img{display:block;max-width:100%}
ul,ol{list-style:none}
a{color:inherit;text-decoration:none}
button{border:none;background:none;cursor:pointer;font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px;border-radius:2px}
::selection{background:var(--color-secondary);color:var(--color-text)}

/* ===== CSS VARIABLES ===== */
:root{
  --color-primary:#0B1A2E;
  --color-secondary:#8A2BE2;
  --color-accent:#39FF14;
  --color-bg:#0D1117;
  --color-surface:#161B22;
  --color-text:#E6EDF3;
  --color-text-secondary:#8B949E;
  --color-data-highlight:#FF6E40;
  --gradient-accent:linear-gradient(135deg,#8A2BE2,#39FF14);
  --rail-width:110px;
  --header-z:1000;
  --shadow-strong:0 8px 32px rgba(0,0,0,0.6);
  --border-raw:2px solid rgba(138,43,226,0.3);
  --font-heading:'Inter',system-ui,-apple-system,sans-serif;
  --font-mono:'JetBrains Mono',monospace;
  --transition:0.3s cubic-bezier(0.4,0,0.2,1);
  --max-width:1280px;
}

/* ===== SKIP LINK ===== */
.skip-link{position:fixed;top:-100%;left:50%;z-index:9999;transform:translateX(-50%);padding:0.75rem 1.5rem;background:var(--color-secondary);color:#fff;font-weight:700;border-radius:0 0 4px 4px;transition:top 0.2s}
.skip-link:focus{top:0}

/* ===== PROGRESS BAR ===== */
.progress-bar{position:fixed;top:0;left:0;z-index:9998;width:100%;height:3px;background:rgba(138,43,226,0.2);pointer-events:none}
.progress-fill{display:block;height:100%;width:0%;background:var(--gradient-accent);transition:width 0.1s linear}

/* ===== HEADER / SIDE RAIL ===== */
.site-header{position:fixed;top:0;left:0;z-index:var(--header-z);height:100vh;width:var(--rail-width);background:var(--color-primary);border-right:var(--border-raw);box-shadow:var(--shadow-strong);display:flex;flex-direction:column}
.side-rail{display:flex;flex-direction:column;height:100%;padding:1.25rem 0;position:relative}
.brand-link{display:flex;flex-direction:column;align-items:center;padding:0.5rem 0.75rem 1rem;text-align:center;position:relative}
.brand-link::after{content:'';display:block;width:60%;height:2px;background:var(--gradient-accent);margin:0.75rem auto 0;clip-path:polygon(0 0,100% 0,95% 100%,5% 100%)}
.brand-mark{font-family:var(--font-heading);font-weight:800;font-size:1.5rem;letter-spacing:0.08em;color:var(--color-accent);text-shadow:0 0 12px rgba(57,255,20,0.4);line-height:1}
.brand-sub{font-family:var(--font-mono);font-size:0.5rem;letter-spacing:0.15em;color:var(--color-text-secondary);margin-top:0.25rem;text-transform:uppercase}
.rail-track{position:absolute;left:50%;top:4.5rem;bottom:3rem;width:1px;background:rgba(138,43,226,0.25);transform:translateX(-50%);pointer-events:none}
.nav-list{flex:1;display:flex;flex-direction:column;justify-content:center;gap:0.125rem;padding:0.5rem 0.25rem;position:relative;z-index:2}
.nav-item{position:relative}
.nav-link{display:flex;align-items:center;gap:0.5rem;padding:0.625rem 0.75rem;border-radius:0 4px 4px 0;transition:var(--transition);position:relative;border-left:2px solid transparent}
.nav-link:hover{background:rgba(138,43,226,0.12);border-left-color:var(--color-secondary)}
.nav-link[aria-current="page"]{background:rgba(138,43,226,0.18);border-left-color:var(--color-accent)}
.nav-link[aria-current="page"] .nav-dot{background:var(--color-accent);box-shadow:0 0 10px rgba(57,255,20,0.5)}
.nav-link[aria-current="page"] .nav-num{color:var(--color-secondary)}
.nav-link[aria-current="page"] .nav-label{color:#fff;font-weight:700}
.nav-dot{width:8px;height:8px;border-radius:50%;background:rgba(139,148,158,0.5);border:1px solid rgba(138,43,226,0.3);flex-shrink:0;transition:var(--transition);position:relative;z-index:2}
.nav-link:hover .nav-dot{background:var(--color-secondary);border-color:var(--color-secondary)}
.nav-num{font-family:var(--font-mono);font-size:0.7rem;font-weight:500;color:var(--color-text-secondary);min-width:1.5rem;text-align:right;transition:var(--transition)}
.nav-label{font-family:var(--font-heading);font-size:0.7rem;font-weight:500;letter-spacing:0.04em;color:var(--color-text-secondary);transition:var(--transition);white-space:nowrap}
.rail-footer{padding:0.75rem;text-align:center}
.rail-hint{font-family:var(--font-mono);font-size:0.5rem;letter-spacing:0.2em;color:rgba(139,148,158,0.4);text-transform:uppercase}

/* ===== NAV TOGGLE (mobile) ===== */
.nav-toggle{display:none;position:fixed;top:0.75rem;right:1rem;z-index:calc(var(--header-z)+2);width:44px;height:44px;flex-direction:column;justify-content:center;align-items:center;gap:5px;padding:8px;background:rgba(11,26,46,0.9);border:1px solid rgba(138,43,226,0.3);border-radius:6px;backdrop-filter:blur(8px)}
.toggle-bar{display:block;width:24px;height:2px;background:var(--color-text);border-radius:2px;transition:var(--transition);transform-origin:center}
.nav-toggle[aria-expanded="true"] .toggle-bar:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .toggle-bar:nth-child(2){opacity:0;transform:scaleX(0)}
.nav-toggle[aria-expanded="true"] .toggle-bar:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ===== NAV OVERLAY ===== */
.nav-overlay{display:none;position:fixed;top:0;left:0;z-index:calc(var(--header-z)-1);width:100%;height:100%;background:rgba(0,0,0,0.6);backdrop-filter:blur(4px);opacity:0;transition:opacity 0.3s;pointer-events:none}

/* ===== FOOTER ===== */
.site-footer{background:var(--color-primary);border-top:var(--border-raw);margin-left:var(--rail-width);padding:3rem 2rem 1.5rem;position:relative}
.site-footer::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:var(--gradient-accent);opacity:0.6}
.footer-inner{max-width:var(--max-width);margin:0 auto}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1.5fr 1fr;gap:2.5rem;margin-bottom:2rem}
.footer-col-title{font-family:var(--font-heading);font-weight:700;font-size:0.8rem;letter-spacing:0.1em;text-transform:uppercase;color:var(--color-secondary);margin-bottom:1rem;padding-bottom:0.5rem;border-bottom:1px solid rgba(138,43,226,0.2)}
.footer-brand-link{display:inline-block;margin-bottom:0.75rem}
.footer-brand-mark{font-size:1.75rem;display:block}
.footer-tagline{font-family:var(--font-heading);font-weight:600;font-size:0.9rem;color:var(--color-accent);margin-bottom:0.75rem;letter-spacing:0.04em}
.footer-desc{font-size:0.8rem;color:var(--color-text-secondary);line-height:1.7;max-width:32rem}
.footer-link-list{display:flex;flex-direction:column;gap:0.6rem}
.footer-link{font-size:0.85rem;color:var(--color-text-secondary);transition:var(--transition);display:inline-flex;align-items:center;gap:0.3rem}
.footer-link:hover{color:var(--color-secondary);text-shadow:0 0 8px rgba(138,43,226,0.3)}
.footer-contact-list{display:flex;flex-direction:column;gap:0.6rem;font-size:0.85rem;color:var(--color-text-secondary)}
.contact-label{font-weight:600;color:var(--color-text)}
.footer-legal-col p{font-size:0.8rem;color:var(--color-text-secondary);margin-bottom:0.4rem}
.footer-copyright{font-family:var(--font-mono);font-size:0.75rem}
.footer-icp{font-size:0.7rem;color:rgba(139,148,158,0.6)}
.footer-bottom{border-top:1px solid rgba(138,43,226,0.15);padding-top:1.5rem;margin-top:0.5rem}
.footer-trust{font-size:0.75rem;color:rgba(139,148,158,0.5);line-height:1.8;text-align:center;max-width:48rem;margin:0 auto}

/* ===== GENERAL COMPONENTS ===== */
/* Buttons */
.btn-neon{display:inline-flex;align-items:center;gap:0.5rem;padding:0.7rem 1.8rem;font-family:var(--font-heading);font-weight:700;font-size:0.85rem;letter-spacing:0.06em;text-transform:uppercase;color:#fff;background:var(--gradient-accent);border-radius:4px;transition:var(--transition);position:relative;overflow:hidden;border:none}
.btn-neon:hover{box-shadow:0 0 24px rgba(138,43,226,0.4),0 0 60px rgba(57,255,20,0.15);transform:translateY(-1px)}
.btn-neon:active{transform:translateY(0)}
.btn-neon::after{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle,rgba(255,255,255,0.15) 0%,transparent 60%);opacity:0;transition:opacity 0.4s}
.btn-neon:hover::after{opacity:1}
.btn-outline{display:inline-flex;align-items:center;gap:0.5rem;padding:0.6rem 1.5rem;font-family:var(--font-heading);font-weight:600;font-size:0.8rem;letter-spacing:0.06em;text-transform:uppercase;color:var(--color-secondary);background:transparent;border:2px solid var(--color-secondary);border-radius:4px;transition:var(--transition)}
.btn-outline:hover{background:var(--color-secondary);color:#fff;box-shadow:0 0 20px rgba(138,43,226,0.3)}

/* Breadcrumb */
.breadcrumb{display:flex;flex-wrap:wrap;gap:0.4rem 0.8rem;padding:0.75rem 0;font-size:0.8rem;color:var(--color-text-secondary);align-items:center}
.breadcrumb a{color:var(--color-text-secondary);transition:var(--transition)}
.breadcrumb a:hover{color:var(--color-secondary)}
.breadcrumb .breadcrumb-current{color:var(--color-text);font-weight:600}
.breadcrumb-sep{color:rgba(138,43,226,0.4);font-size:0.7rem}

/* Container */
.container{max-width:var(--max-width);margin:0 auto;padding:0 2rem}
.section{padding:4rem 0;margin-left:var(--rail-width);position:relative}

/* Responsive images container */
.img-frame{position:relative;overflow:hidden;border-radius:4px;border:var(--border-raw);background:var(--color-surface);aspect-ratio:16/9;display:flex;align-items:center;justify-content:center}
.img-frame::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(138,43,226,0.08),rgba(57,255,20,0.04));z-index:1;pointer-events:none}
.img-placeholder{width:100%;height:100%;object-fit:cover}

/* Data card */
.data-card{background:var(--color-surface);border:var(--border-raw);border-radius:6px;padding:1.5rem;transition:var(--transition);position:relative}
.data-card:hover{border-color:rgba(138,43,226,0.6);box-shadow:0 4px 24px rgba(0,0,0,0.4),0 0 12px rgba(138,43,226,0.08)}
.data-card .card-title{font-family:var(--font-heading);font-weight:700;font-size:1rem;letter-spacing:0.04em;margin-bottom:0.75rem;color:var(--color-text)}
.data-card .card-value{font-family:var(--font-mono);font-size:2rem;font-weight:600;color:var(--color-accent);text-shadow:0 0 10px rgba(57,255,20,0.15)}
.data-card .card-label{font-size:0.75rem;color:var(--color-text-secondary);text-transform:uppercase;letter-spacing:0.08em}

/* Section numbering */
.section-number{font-family:var(--font-mono);font-size:0.75rem;font-weight:500;color:var(--color-secondary);letter-spacing:0.1em;display:block;margin-bottom:0.5rem}
.section-title{font-family:var(--font-heading);font-weight:800;font-size:2rem;letter-spacing:0.05em;text-transform:uppercase;color:var(--color-text);line-height:1.2;margin-bottom:1rem}
.section-title .title-accent{color:var(--color-secondary)}

/* ===== RESPONSIVE ===== */
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:2rem}
  .footer-brand-col{grid-column:1/-1}
}

@media (max-width:767px){
  :root{--rail-width:0px}
  .site-header{width:100%;height:auto;border-right:none;border-bottom:var(--border-raw);flex-direction:row;align-items:center;padding:0 1rem;box-shadow:none}
  .side-rail{position:fixed;top:0;left:0;z-index:calc(var(--header-z)+1);width:280px;height:100vh;background:var(--color-primary);border-right:var(--border-raw);box-shadow:var(--shadow-strong);transform:translateX(-105%);transition:transform 0.35s cubic-bezier(0.4,0,0.2,1);padding:2rem 1rem 1rem;overflow-y:auto}
  .side-rail[data-open]{transform:translateX(0)}
  .side-rail[data-open]~.nav-overlay{display:block;opacity:1;pointer-events:auto}
  .nav-toggle{display:flex}
  .nav-list{justify-content:flex-start;padding-top:1rem}
  .nav-link{padding:0.75rem 0.75rem}
  .rail-footer{display:none}
  .brand-sub{display:none}
  .rail-track{left:1.5rem;top:5rem;bottom:1rem}
  .brand-link::after{margin-left:auto;margin-right:auto}
  .nav-overlay{display:block}
  .site-footer{margin-left:0;padding:2rem 1.25rem 1rem}
  .footer-grid{grid-template-columns:1fr;gap:1.5rem}
  .footer-bottom{padding-top:1rem}
  .section{margin-left:0;padding:2.5rem 0}
  .container{padding:0 1.25rem}
  .section-title{font-size:1.5rem}
  .breadcrumb{padding:0.5rem 0;font-size:0.75rem}
}

@media (max-width:480px){
  .footer-contact-list li{flex-wrap:wrap}
  .contact-label{display:block;margin-bottom:0.15rem}
  .btn-neon{padding:0.6rem 1.2rem;font-size:0.75rem}
}

/* ===== REDUCED MOTION ===== */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:0.01ms!important;animation-iteration-count:1!important;transition-duration:0.01ms!important;scroll-behavior:auto!important}
  .progress-fill{transition:none}
  .side-rail{transition:none}
  .nav-toggle .toggle-bar{transition:none}
  .data-card,.btn-neon,.btn-outline,.footer-link,.nav-link{transition:none}
  .nav-overlay{transition:none}
}

/* ===== UTILITY ===== */
.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}
.text-center{text-align:center}
.mt-1{margin-top:1rem}
.mb-1{margin-bottom:1rem}
.mb-2{margin-bottom:2rem}
.gap-1{gap:1rem}
.flex{display:flex}
.flex-col{flex-direction:column}
.items-center{align-items:center}
.justify-center{justify-content:center}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}
.grid-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:1.5rem}
@media (max-width:767px){
  .grid-2,.grid-3{grid-template-columns:1fr}
}