:root{
  --ink-900:#070D24;
  --ink-800:#101A3D;
  --ink-700:#17224A;
  --ink-600:#1F2C5B;
  --neon:#C6FF3D;
  --flare:#FF5A36;
  --paper:#F7F9FF;
  --mist:#98A4C4;
  --cyan:#37E6D9;
  --violet:#8E6BFF;
  --turf:#1C4A37;
  --sand:#E9E4D8;
  --line:rgba(152,164,196,.20);
  --line-strong:rgba(152,164,196,.42);
  --header-h:78px;
  --shell:1280px;
  --gutter:clamp(18px,5vw,56px);
  --radius-lg:26px;
  --radius-md:16px;
  --radius-sm:10px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-display:"Barlow Condensed","Oswald","Arial Narrow","PingFang SC","Noto Sans SC","Hiragino Sans GB",system-ui,sans-serif;
  --font-body:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",ui-monospace,Menlo,Consolas,"Courier New",monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;padding:0;
  background:var(--ink-900);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:17px;line-height:1.75;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img,svg,picture,video{display:block;max-width:100%}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0}
a{color:inherit}
p{margin:0;max-width:38em}
h1,h2,h3,h4{margin:0;font-family:var(--font-display);font-weight:800;font-stretch:condensed;line-height:1.06;letter-spacing:.01em}
h1{font-size:clamp(40px,6.6vw,86px)}
h2{font-size:clamp(30px,4.2vw,52px)}
h3{font-size:clamp(21px,2.4vw,28px);line-height:1.24}
:focus-visible{outline:3px solid var(--cyan);outline-offset:3px;border-radius:4px}
#main-content:focus,#main-content:focus-visible{outline:none}

/* ---------- utilities ---------- */
.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--gutter)}
.main-offset{padding-top:var(--header-h)}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}
.coord{display:inline-block;font-family:var(--font-mono);font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--mist)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;margin:0 0 16px;font-family:var(--font-mono);font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--neon)}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--neon);flex:0 0 auto}
.rule{height:1px;border:0;background:var(--line);margin:0}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:clamp(20px,3vw,36px)}
.section-lead{color:var(--mist);font-size:16px;line-height:1.7;max-width:36em}

/* ---------- buttons & small parts ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.55em;
  padding:14px 22px;font-family:var(--font-body);font-size:15px;font-weight:700;line-height:1;
  text-decoration:none;cursor:pointer;border:1px solid transparent;border-radius:6px;
  transition:transform .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn-neon{
  background:var(--neon);color:var(--ink-900);border-color:var(--neon);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 11px),calc(100% - 11px) 100%,0 100%);
  border-radius:4px;
}
.btn-neon:hover{background:#d6ff6d;border-color:#d6ff6d}
.btn-ghost{background:transparent;color:var(--paper);border-color:var(--line-strong)}
.btn-ghost:hover{border-color:var(--neon);color:var(--neon)}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 15px;border:1px solid var(--line-strong);border-radius:999px;
  background:rgba(16,26,61,.65);color:var(--mist);
  font-size:14px;font-weight:600;line-height:1;text-decoration:none;cursor:pointer;
  transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);
}
.chip:hover{color:var(--paper)}
.chip[aria-pressed="true"],.chip.is-active{border-color:var(--neon);color:var(--paper);box-shadow:inset 0 0 0 1px var(--neon)}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 10px;border-radius:4px;
  background:rgba(255,90,54,.14);color:var(--flare);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;line-height:1.2;
}
.panel{background:var(--ink-800);border:1px solid var(--line);border-radius:var(--radius-md);padding:clamp(20px,3vw,32px)}
.panel--turf{background:linear-gradient(150deg,var(--turf),var(--ink-800) 70%);border-color:rgba(198,255,61,.12)}
.data-bar{position:relative;height:10px;border-radius:999px;background:rgba(152,164,196,.16);overflow:hidden}
.data-bar > span{display:block;height:100%;width:var(--value,50%);border-radius:inherit;background:linear-gradient(90deg,var(--cyan),var(--violet));transition:width .6s var(--ease)}

/* ---------- media ---------- */
.media-frame{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  aspect-ratio:16/10;
  background:linear-gradient(145deg,var(--ink-700),var(--turf) 90%);
  border:1px solid var(--line);
}
.media-frame img,.media-frame picture img{width:100%;height:100%;object-fit:cover}
.media-frame[data-ratio="wide"]{aspect-ratio:21/9}
.media-frame[data-ratio="tall"]{aspect-ratio:4/5}
.media-frame[data-ratio="square"]{aspect-ratio:1/1}
.media-frame--veil::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(7,13,36,0) 38%,rgba(7,13,36,.78));
}

/* ---------- grid ---------- */
.grid-split{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:clamp(24px,4vw,56px);align-items:start}
.grid-split--flip{grid-template-columns:minmax(0,5fr) minmax(0,7fr)}

/* ---------- breadcrumb ---------- */
.breadcrumb{margin:0 0 clamp(18px,2.6vw,30px)}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--mist)}
.breadcrumb li{display:flex;align-items:center;gap:10px}
.breadcrumb li + li::before{content:"/";color:var(--line-strong);font-family:var(--font-mono)}
.breadcrumb a{color:var(--mist);text-decoration:none}
.breadcrumb a:hover{color:var(--neon)}
.breadcrumb [aria-current="page"]{color:var(--paper)}

/* ---------- accordion base ---------- */
.accordion{border-top:1px solid var(--line)}
.acc-item{border-bottom:1px solid var(--line)}
.acc-trigger{
  display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;
  padding:20px 0;text-align:left;cursor:pointer;
  font-family:var(--font-body);font-size:17px;font-weight:700;color:var(--paper);
  transition:color .2s var(--ease);
}
.acc-trigger:hover{color:var(--neon)}
.acc-trigger::after{
  content:"+";flex:0 0 auto;font-family:var(--font-mono);font-size:20px;line-height:1;
  color:var(--neon);transition:transform .24s var(--ease);
}
.acc-trigger[aria-expanded="true"]{color:var(--neon)}
.acc-trigger[aria-expanded="true"]::after{transform:rotate(45deg)}
.acc-panel{display:grid;grid-template-rows:0fr;transition:grid-template-rows .24s var(--ease)}
.acc-panel > *{overflow:hidden;min-height:0}
.acc-panel[data-open]{grid-template-rows:1fr}
.acc-panel p{padding-bottom:22px;color:var(--mist);font-size:16px;line-height:1.8}

/* ---------- skip link ---------- */
.skip-link{
  position:fixed;top:10px;left:10px;z-index:200;
  transform:translateY(-180%);
  padding:12px 20px;border-radius:8px;
  background:var(--neon);color:var(--ink-900);
  font-weight:700;text-decoration:none;
  transition:transform .2s var(--ease);
}
.skip-link:focus{transform:translateY(0)}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:linear-gradient(180deg,rgba(7,13,36,.82),rgba(7,13,36,0));
  border-bottom:1px solid transparent;
  transition:background-color .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--cyan),var(--violet) 46%,var(--neon));
  opacity:.55;
}
.site-header[data-scrolled]{
  background:var(--ink-800);
  border-bottom-color:var(--line);
  box-shadow:0 22px 48px -34px #000;
}
.header-inner{
  display:flex;align-items:center;gap:clamp(12px,2.2vw,34px);
  width:100%;max-width:var(--shell);margin-inline:auto;
  padding:20px var(--gutter);
  transition:padding .28s var(--ease);
}
.site-header[data-scrolled] .header-inner{padding-block:11px}

.brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto;text-decoration:none;color:var(--paper)}
.brand-dot{
  width:11px;height:11px;border-radius:50%;background:var(--neon);
  box-shadow:0 0 0 4px rgba(198,255,61,.16),0 0 18px rgba(198,255,61,.75);
  flex:0 0 auto;
}
.brand-lockup{display:flex;align-items:baseline;gap:9px}
.brand-name{font-family:var(--font-display);font-weight:800;font-stretch:condensed;font-size:22px;letter-spacing:.02em;line-height:1}
.brand-sep{font-family:var(--font-mono);font-size:15px;color:var(--neon);line-height:1}
.brand-sub{font-size:12px;font-weight:500;letter-spacing:.3em;color:var(--mist);line-height:1}

.primary-nav{margin-inline-start:auto}
.nav-list{display:flex;align-items:center;gap:clamp(8px,1.7vw,26px)}
.nav-link{
  position:relative;display:inline-flex;align-items:baseline;gap:6px;
  padding:8px 2px;color:var(--mist);text-decoration:none;
  font-size:15px;font-weight:600;line-height:1.2;white-space:nowrap;
  transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--neon);transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.nav-link:hover{color:var(--paper)}
.nav-link:hover::after,.nav-link[aria-current="page"]::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--paper)}
.nav-index{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.06em;
  color:var(--flare);opacity:.85;
}
.nav-link[aria-current="page"] .nav-index{color:var(--neon)}
.nav-cta{display:none}

.header-utility{display:flex;align-items:center;gap:10px;margin-inline-start:6px;flex:0 0 auto}
.btn-cal{padding:13px 18px;font-size:14px}
.icon-link{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line-strong);color:var(--paper);text-decoration:none;
  transition:border-color .2s var(--ease),color .2s var(--ease),background-color .2s var(--ease);
}
.icon-link svg{width:17px;height:17px}
.icon-link:hover{border-color:var(--neon);color:var(--neon);background:rgba(198,255,61,.07)}

.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;padding:0;cursor:pointer;
  border:1px solid var(--line-strong);border-radius:12px;
  transition:border-color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--neon)}
.nav-toggle-bars{display:grid;gap:4px;width:20px}
.nav-toggle-bars i{display:block;height:2px;background:var(--paper);border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.scroll-progress{
  position:absolute;left:0;bottom:-1px;height:2px;width:0;
  background:linear-gradient(90deg,var(--cyan),var(--neon));
  transition:width .1s linear;
}

/* ---------- footer ---------- */
.site-footer{
  position:relative;overflow:hidden;
  margin-top:clamp(48px,8vw,110px);
  background:var(--ink-900);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--neon),var(--cyan) 42%,var(--violet));
}
.footer-blob{
  position:absolute;right:-150px;bottom:-190px;width:540px;height:540px;
  border-radius:62% 38% 54% 46% / 48% 62% 38% 52%;
  background:radial-gradient(circle at 32% 32%,rgba(28,74,55,.85),rgba(28,74,55,0) 72%);
  pointer-events:none;
}
.footer-inner{position:relative;z-index:1}
.footer-top{
  display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);
  gap:clamp(28px,5vw,66px);
  padding-block:clamp(38px,6vw,74px) clamp(26px,4vw,48px);
}
.footer-brand{max-width:24em}
.footer-lockup{
  display:flex;align-items:baseline;flex-wrap:wrap;gap:9px;max-width:none;
  font-family:var(--font-display);font-weight:800;font-stretch:condensed;
  font-size:24px;line-height:1.15;letter-spacing:.02em;
}
.footer-sep{font-family:var(--font-mono);font-size:16px;color:var(--neon)}
.footer-pitch{margin-top:14px;color:var(--mist);font-size:15px;line-height:1.8;max-width:30em}
.footer-legend{display:flex;flex-wrap:wrap;gap:10px 20px;margin-top:22px}
.footer-legend li{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--mist)}
.legend-key{width:14px;height:14px;border-radius:3px;flex:0 0 auto}
.legend-key-neon{background:var(--neon)}
.legend-key-flare{background:var(--flare)}
.legend-key-cyan{background:linear-gradient(135deg,var(--cyan),var(--violet))}

.footer-cols{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:clamp(18px,3vw,34px)}
.footer-col-title{
  font-family:var(--font-mono);font-size:11px;font-weight:600;
  letter-spacing:.2em;text-transform:uppercase;color:var(--paper);
  margin:0 0 14px;line-height:1.4;
}
.footer-col ul{display:grid;gap:10px}
.footer-col a{
  color:var(--mist);text-decoration:none;font-size:15px;
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.footer-col a:hover{color:var(--neon);border-bottom-color:var(--neon)}

.footer-contact{
  border-top:1px solid var(--line);
  padding-block:clamp(24px,3.4vw,38px);
}
.footer-contact-title{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--neon);margin:0;
}
.contact-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px 26px;margin-top:16px}
.contact-list li{
  display:flex;flex-direction:column;gap:4px;
  padding-left:13px;border-left:2px solid var(--line-strong);
}
.contact-key{font-family:var(--font-mono);font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--mist)}
.contact-val{color:var(--paper);font-size:15px;line-height:1.6;word-break:break-word}
.footer-note{margin-top:18px;color:var(--mist);font-size:13px;line-height:1.7;max-width:52em}

.footer-legal{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 24px;
  border-top:1px solid var(--line);
  padding-block:20px clamp(30px,4vw,44px);
  font-size:13px;color:var(--mist);
}
.legal-copy{margin:0;max-width:none}
.legal-links{display:flex;flex-wrap:wrap;gap:8px 20px}
.legal-links a{color:var(--mist);text-decoration:none;border-bottom:1px solid transparent;transition:color .2s var(--ease),border-color .2s var(--ease)}
.legal-links a:hover{color:var(--neon);border-bottom-color:var(--neon)}

.to-top{
  position:fixed;right:20px;bottom:20px;z-index:70;
  width:48px;height:48px;display:grid;place-items:center;
  border:1px solid var(--line-strong);border-radius:50%;
  background:var(--ink-800);color:var(--neon);
  font-size:18px;cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s var(--ease),border-color .2s var(--ease);
}
.to-top[data-visible]{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{border-color:var(--neon)}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .brand-sub{display:none}
  .nav-index{display:none}
  .grid-split,.grid-split--flip{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:900px){
  :root{--header-h:68px}
  body{font-size:16px;line-height:1.8}
  .header-inner{padding-block:14px}
  .site-header[data-scrolled] .header-inner{padding-block:10px}
  .btn-cal{display:none}
  .nav-toggle{display:inline-flex}
  .primary-nav{
    position:fixed;top:var(--header-h);left:0;right:0;
    max-height:calc(100vh - var(--header-h));
    overflow-y:auto;
    margin:0;padding:18px var(--gutter) 30px;
    background:var(--ink-800);
    border-block:1px solid var(--line);
    box-shadow:0 30px 60px -40px #000;
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s var(--ease);
  }
  .primary-nav[data-open]{opacity:1;visibility:visible;transform:translateY(0)}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-list li + li{border-top:1px solid var(--line)}
  .nav-link{
    display:flex;align-items:baseline;gap:14px;
    padding:16px 0;font-size:18px;color:var(--paper);
  }
  .nav-link::after{display:none}
  .nav-index{display:inline-block;font-size:11px;color:var(--flare)}
  .nav-link[aria-current="page"] .nav-index{color:var(--neon)}
  .nav-link[aria-current="page"]{color:var(--neon)}
  .nav-cta{display:inline-flex;width:100%;margin-top:24px;justify-content:center}
  .footer-top{grid-template-columns:minmax(0,1fr)}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:640px){
  .brand-name{font-size:19px}
  .brand-dot{width:9px;height:9px}
  .icon-link{width:36px;height:36px}
  .footer-legend{gap:8px 14px}
  .footer-legal{flex-direction:column;align-items:flex-start}
  .to-top{right:14px;bottom:14px;width:44px;height:44px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
}