/* ===== Reset ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{min-height:100vh;background:var(--color-bg);color:var(--color-text);font-family:var(--font-body);font-size:var(--size-body);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
img,svg{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}
:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:0.01ms!important;transition-duration:0.01ms!important;scroll-behavior:auto!important}}
/* ===== Variables ===== */
:root{
  --color-bg:#0B1A33;
  --color-bg-surface:#0F2240;
  --color-bg-surface-light:#1A2F4F;
  --color-text:#E0E6ED;
  --color-text-secondary:#8899AA;
  --color-accent:#9B59B6;
  --color-accent-glow:rgba(155,89,182,0.4);
  --color-signal:#39FF14;
  --color-signal-glow:rgba(57,255,20,0.3);
  --color-error:#FF3355;
  --color-warning:#FFAA00;
  --color-success:#00FF88;
  --color-overlay:rgba(11,26,51,0.85);
  --font-heading:'Montserrat',sans-serif;
  --font-body:'Inter',sans-serif;
  --size-h1:48px;
  --size-h2:36px;
  --size-h3:28px;
  --size-body:16px;
  --size-label:14px;
  --radius-capsule:60px;
  --radius-card:16px;
  --radius-sm:8px;
  --border-glow:0 0 12px var(--color-accent-glow);
  --shadow-card:0 8px 32px rgba(0,0,0,0.6);
  --max-width:1200px;
  --header-h:72px;
  --sidebar-w:280px;
  --sidebar-collapsed-w:0px;
  --transition:0.3s cubic-bezier(0.25,0.46,0.45,0.94)
}
/* ===== Typography ===== */
h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);font-weight:800;line-height:1.2;color:var(--color-text)}
h1{font-size:var(--size-h1)}h2{font-size:var(--size-h2)}h3{font-size:var(--size-h3)}
p,li,div,span{font-family:var(--font-body);font-size:var(--size-body);line-height:1.6;color:var(--color-text)}
.label{font-family:var(--font-body);font-weight:500;font-size:var(--size-label);letter-spacing:0.05em;text-transform:uppercase;color:var(--color-text-secondary)}
/* ===== Skip Link ===== */
.skip-link{position:absolute;top:-100%;left:16px;z-index:1000;padding:8px 16px;background:var(--color-accent);color:#fff;border-radius:var(--radius-sm);font-weight:600;transition:top 0.2s}
.skip-link:focus{top:8px}
/* ===== Site Header ===== */
.site-header{position:fixed;top:0;left:0;right:0;z-index:900;height:var(--header-h);display:flex;align-items:center;justify-content:center;pointer-events:none;background:transparent}
.header-container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;pointer-events:auto;gap:16px}
/* Sidebar Toggle */
.sidebar-toggle{display:flex;flex-direction:column;justify-content:center;align-items:center;width:44px;height:44px;border-radius:50%;background:var(--color-bg-surface);border:1px solid var(--color-accent-glow);gap:4px;transition:var(--transition);flex-shrink:0;pointer-events:auto}
.sidebar-toggle:hover,.sidebar-toggle:focus-visible{box-shadow:var(--border-glow);border-color:var(--color-accent)}
.sidebar-toggle__line{display:block;width:18px;height:2px;background:var(--color-text);border-radius:2px;transition:var(--transition)}
/* Brand Capsule */
.brand-capsule{display:flex;align-items:center;gap:8px;padding:6px 10px 6px 20px;background:rgba(15,34,64,0.75);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--color-accent-glow);border-radius:var(--radius-capsule);box-shadow:var(--shadow-card),0 0 20px rgba(155,89,182,0.15);flex:1;justify-content:space-between;max-width:820px}
.brand{display:flex;align-items:center;flex-shrink:0}
.brand__svg{width:100px;height:24px;display:block}
.nav-capsule{display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.nav-capsule__link{font-family:var(--font-body);font-size:14px;font-weight:500;color:var(--color-text-secondary);padding:8px 14px;border-radius:var(--radius-capsule);transition:var(--transition);white-space:nowrap}
.nav-capsule__link:hover,.nav-capsule__link:focus-visible{color:var(--color-text);background:rgba(155,89,182,0.15);box-shadow:0 0 8px rgba(155,89,182,0.2)}
.nav-capsule__link[aria-current="page"]{color:var(--color-signal);background:rgba(57,255,20,0.1);box-shadow:0 0 8px var(--color-signal-glow)}
.nav-capsule__cta{font-family:var(--font-body);font-size:14px;font-weight:700;color:#0B1A33;background:linear-gradient(135deg,var(--color-signal),#2dd4bf);padding:8px 22px;border-radius:var(--radius-capsule);transition:var(--transition);white-space:nowrap;text-shadow:0 1px 2px rgba(0,0,0,0.2)}
.nav-capsule__cta:hover,.nav-capsule__cta:focus-visible{box-shadow:0 0 24px var(--color-signal-glow);transform:scale(1.04)}
/* Mobile Nav Toggle */
.mobile-nav-toggle{display:none;flex-direction:column;justify-content:center;align-items:center;width:44px;height:44px;border-radius:50%;background:var(--color-bg-surface);border:1px solid var(--color-accent-glow);gap:4px;transition:var(--transition);flex-shrink:0;pointer-events:auto}
.mobile-nav-toggle:hover,.mobile-nav-toggle:focus-visible{box-shadow:var(--border-glow)}
.mobile-nav-toggle__line{display:block;width:20px;height:2px;background:var(--color-text);border-radius:2px;transition:var(--transition)}
.mobile-nav-toggle[aria-expanded="true"] .mobile-nav-toggle__line:nth-child(1){transform:translateY(6px) rotate(45deg)}
.mobile-nav-toggle[aria-expanded="true"] .mobile-nav-toggle__line:nth-child(2){opacity:0}
.mobile-nav-toggle[aria-expanded="true"] .mobile-nav-toggle__line:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
/* ===== Navigation mobile open state ===== */
@media(max-width:767px){
  .mobile-nav-toggle{display:flex}
  .nav-capsule{position:fixed;top:var(--header-h);left:16px;right:16px;flex-direction:column;background:rgba(15,34,64,0.95);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--color-accent-glow);border-radius:var(--radius-card);padding:16px;gap:6px;box-shadow:var(--shadow-card);opacity:0;visibility:hidden;transform:translateY(-8px);transition:var(--transition);max-height:calc(100vh - 100px);overflow-y:auto}
  .nav-capsule[data-open]{opacity:1;visibility:visible;transform:translateY(0)}
  .nav-capsule__link,.nav-capsule__cta{width:100%;text-align:center;padding:12px 16px;font-size:16px}
  .brand-capsule{padding:4px 12px;gap:4px;flex:0 1 auto;max-width:none}
  .nav-capsule__cta{margin-top:8px}
}
/* ===== Site Footer ===== */
.site-footer{background:var(--color-bg-surface);border-top:1px solid var(--color-accent-glow);padding:48px 20px 32px;margin-top:80px}
.footer-container{max-width:var(--max-width);margin:0 auto;display:grid;grid-template-columns:1fr 1fr 1.5fr;gap:40px;align-items:start}
.footer__brand{display:flex;flex-direction:column;gap:12px}
.footer__logo{width:100px;height:24px}
.footer__tagline{font-size:14px;color:var(--color-text-secondary);font-weight:400;letter-spacing:0.02em}
.footer__links{display:flex;flex-direction:column;gap:12px;padding-top:4px}
.footer__link{font-size:15px;color:var(--color-text-secondary);transition:var(--transition);padding:4px 0}
.footer__link:hover,.footer__link:focus-visible{color:var(--color-signal)}
.footer__info{display:flex;flex-direction:column;gap:10px;padding-top:4px}
.footer__icp{font-size:13px;color:var(--color-text-secondary)}
.footer__contact{font-size:14px;color:var(--color-accent);font-weight:500}
.footer__address{font-size:13px;color:var(--color-text-secondary)}
.footer__trust{font-size:12px;color:var(--color-text-secondary);opacity:0.7;line-height:1.5;margin-top:8px;padding-top:12px;border-top:1px solid rgba(155,89,182,0.2)}
/* ===== Scroll Progress ===== */
.scroll-progress{position:fixed;top:0;left:0;height:3px;background:linear-gradient(90deg,var(--color-accent),var(--color-signal));width:0%;z-index:999;transition:width 0.1s linear;pointer-events:none}
@media(prefers-reduced-motion:reduce){.scroll-progress{display:none}}
/* ===== Back to Top ===== */
.back-to-top{position:fixed;bottom:32px;right:32px;width:48px;height:48px;border-radius:50%;background:var(--color-bg-surface);border:1px solid var(--color-accent-glow);display:flex;align-items:center;justify-content:center;color:var(--color-text);font-size:22px;box-shadow:var(--shadow-card);opacity:0;visibility:hidden;transform:translateY(12px);transition:var(--transition);z-index:800;pointer-events:auto}
.back-to-top.visible{opacity:1;visibility:visible;transform:translateY(0)}
.back-to-top:hover,.back-to-top:focus-visible{box-shadow:var(--border-glow);background:var(--color-bg-surface-light);color:var(--color-signal)}
.back-to-top::after{content:"↑";font-family:var(--font-body);font-weight:700}
/* ===== Sidebar ===== */
.sidebar{position:fixed;top:var(--header-h);left:0;bottom:0;width:var(--sidebar-w);background:rgba(15,34,64,0.88);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-right:1px solid var(--color-accent-glow);padding:24px 16px;overflow-y:auto;z-index:850;transition:var(--transition);transform:translateX(0);box-shadow:4px 0 24px rgba(0,0,0,0.4)}
.sidebar.collapsed{transform:translateX(-100%);border-right-color:transparent}
@media(max-width:1023px){
  .sidebar{width:280px;transform:translateX(-100%);border-right-color:transparent;box-shadow:none}
  .sidebar.open{transform:translateX(0);box-shadow:4px 0 32px rgba(0,0,0,0.6)}
  .sidebar.collapsed{transform:translateX(-100%)}
  .sidebar-toggle{display:flex}
}
@media(min-width:1024px){
  .sidebar.collapsed{transform:translateX(-100%);width:0;padding:0;overflow:hidden;border:none}
}
/* ===== Layout (page level) ===== */
.layout{display:grid;grid-template-columns:var(--sidebar-w) 1fr;max-width:var(--max-width);margin:0 auto;padding:calc(var(--header-h) + 24px) 20px 40px;gap:32px;min-height:80vh}
.layout__sidebar{position:relative}
.layout__main{min-width:0;padding-right:0}
.main-content{outline:none}
@media(max-width:1023px){
  .layout{grid-template-columns:1fr;padding:calc(var(--header-h) + 16px) 16px 40px;gap:24px}
  .layout__sidebar{display:none}
}
/* ===== Container ===== */
.container{max-width:var(--max-width);margin:0 auto;padding:0 20px}
/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;border-radius:var(--radius-capsule);font-weight:600;font-size:15px;transition:var(--transition);border:none;cursor:pointer;background:var(--color-bg-surface-light);color:var(--color-text)}
.btn:hover,.btn:focus-visible{box-shadow:var(--border-glow)}
.btn--primary{background:linear-gradient(135deg,var(--color-accent),#7c3aed);color:#fff}
.btn--primary:hover{box-shadow:0 0 20px var(--color-accent-glow)}
.btn--ghost{background:transparent;border:1px solid var(--color-accent-glow);color:var(--color-text)}
.btn--ghost:hover{background:rgba(155,89,182,0.1)}
/* ===== Breadcrumb ===== */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:16px 0;font-size:14px;color:var(--color-text-secondary)}
.breadcrumb__item{color:var(--color-text-secondary)}
.breadcrumb__item a{color:var(--color-accent);transition:var(--transition)}
.breadcrumb__item a:hover{color:var(--color-signal)}
.breadcrumb__separator{color:var(--color-text-secondary);opacity:0.5;margin:0 4px}
/* ===== 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:0}
/* ===== Responsive Footer ===== */
@media(max-width:767px){
  .footer-container{grid-template-columns:1fr;gap:28px}
  .site-footer{padding:36px 20px 24px}
  .brand-capsule{padding:4px 10px}
  .nav-capsule__link,.nav-capsule__cta{font-size:15px;padding:10px 16px}
}
@media(min-width:768px)and(max-width:1023px){
  .footer-container{grid-template-columns:1fr 1fr;gap:32px}
  .footer__info{grid-column:1/-1}
  .brand-capsule{max-width:100%}
}
/* ===== Header responsive ===== */
@media(max-width:767px){
  .site-header{height:60px}
  :root{--header-h:60px}
  .header-container{padding:0 12px;gap:8px}
  .sidebar-toggle{width:38px;height:38px}
  .sidebar-toggle__line{width:16px;height:2px}
  .mobile-nav-toggle{width:38px;height:38px}
  .mobile-nav-toggle__line{width:18px}
  .brand__svg{width:80px;height:20px}
  .brand-capsule{padding:4px 8px 4px 14px}
}
@media(min-width:768px)and(max-width:1023px){
  .site-header{height:64px}
  :root{--header-h:64px}
  .header-container{padding:0 16px}
}
/* ===== CTA button in header consistent ===== */
@media(max-width:767px){
  .nav-capsule__cta{font-size:15px;padding:12px 20px;width:100%}
}
/* ===== Focus visible global ===== */
:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}
/* ===== Image container base (for page use) ===== */
.img-frame{background:var(--color-bg-surface-light);border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--color-accent-glow);min-height:120px;display:flex;align-items:center;justify-content:center;color:var(--color-text-secondary);font-size:14px}
.img-frame--hero{min-height:300px}
.img-frame--card{min-height:160px}
@media(prefers-reduced-motion:reduce){
  .brand-capsule,.sidebar,.nav-capsule,.back-to-top,.sidebar-toggle,.mobile-nav-toggle{transition:none}
}