/* ===== Reset & Base ===== */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;line-height:1.15}
body{min-height:100vh;background:var(--clr-deep-blue);color:var(--clr-white);font-family:var(--font-body);font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img,svg,video{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
a{color:var(--clr-electric-green);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--clr-cyan-glow)}
ul,ol{list-style:none}
h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);font-weight:900;line-height:1.15;font-style:italic;letter-spacing:.01em}
p{max-width:70ch}

/* ===== CSS Variables ===== */
:root{
--clr-deep-blue:#0A1128;
--clr-panel-blue:#111B3D;
--clr-electric-green:#00FFAA;
--clr-signal-orange:#FF5E3A;
--clr-cyan-glow:#00E5FF;
--clr-white:#FFFFFF;
--clr-muted-silver:#A0AEC0;
--clr-dark-zone:#0D1526;
--clr-purple-accent:#7A5AF8;
--clr-lime-yellow:#D4FF00;
--font-heading:'Archivo Black','Noto Sans SC','PingFang SC','Microsoft YaHei',Arial,sans-serif;
--font-body:'Inter','Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,-apple-system,'Segoe UI',Roboto,Arial,sans-serif;
--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:24px;--space-6:32px;--space-7:48px;--space-8:64px;
--max-width:1200px;
--header-bg:rgba(10,17,40,.86);
--glass-bg:rgba(17,27,61,.6);
--border-glow:rgba(0,229,255,.16);
--transition-fast:.18s ease;
--transition-mid:.28s ease;
}

/* ===== Focus Visible ===== */
:focus-visible{outline:3px solid var(--clr-electric-green);outline-offset:3px;border-radius:2px}
.skip-link{position:fixed;top:-120px;left:var(--space-4);z-index:2000;padding:var(--space-3) var(--space-5);background:var(--clr-electric-green);color:var(--clr-deep-blue);font-weight:700;font-size:.9375rem;border-radius:var(--space-1);box-shadow:0 6px 24px rgba(0,255,170,.35);transition:top .2s ease}
.skip-link:focus{top:var(--space-4)}

/* ===== Visually Hidden ===== */
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ===== Scroll Progress ===== */
.scroll-progress{position:fixed;top:0;left:0;z-index:1200;width:100%;height:3px;background:linear-gradient(90deg,var(--clr-electric-green) 0%,var(--clr-cyan-glow) 40%,var(--clr-purple-accent) 100%);transform:scaleX(0);transform-origin:left center;pointer-events:none;box-shadow:0 0 12px rgba(0,255,170,.4)}

/* ===== Container & Sections ===== */
.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 var(--space-5)}
.section{padding:var(--space-8) 0}
.section--wide{max-width:100%;padding:var(--space-8) var(--space-5)}
.section--narrow{max-width:860px;margin:0 auto;padding:var(--space-7) var(--space-5)}
stack-panels,.stack-panels{display:grid;gap:var(--space-6)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-7);align-items:center}
.divider-x{height:1px;background:linear-gradient(90deg,transparent,rgba(0,229,255,.35),transparent);border:0;margin:var(--space-7) 0}

/* ===== Panels ===== */
.panel{position:relative;background:var(--clr-panel-blue);border:1px solid rgba(0,229,255,.08);border-radius:var(--space-3);padding:var(--space-6);box-shadow:0 18px 40px rgba(0,0,0,.32),0 0 0 1px rgba(0,229,255,.04)}
.panel::before{content:'';position:absolute;top:-1px;left:var(--space-5);right:var(--space-5);height:2px;background:linear-gradient(90deg,var(--clr-electric-green),transparent 80%)}
.glass-panel{position:relative;background:var(--glass-bg);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border:1px solid var(--border-glow);border-radius:var(--space-4);padding:var(--space-6);box-shadow:0 12px 36px rgba(0,0,0,.25)}

/* ===== Tags, Chips, Dots ===== */
.tag-label{display:inline-flex;align-items:center;gap:var(--space-2);padding:var(--space-1) var(--space-3);background:rgba(0,255,170,.08);border:1px solid rgba(0,255,170,.3);border-radius:var(--space-1);color:var(--clr-electric-green);font-size:.75rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase}
.live-dot{display:inline-block;position:relative;width:8px;height:8px;border-radius:50%;background:var(--clr-signal-orange);flex:none}
.live-dot::after{content:'';position:absolute;inset:-5px;border-radius:50%;border:2px solid rgba(255,94,58,.45);animation:livePulse 2s ease-out infinite}
@keyframes livePulse{0%{transform:scale(.55);opacity:1}100%{transform:scale(1.45);opacity:0}}
.data-chip{display:inline-flex;align-items:center;gap:var(--space-2);padding:var(--space-1) var(--space-3);background:linear-gradient(135deg,rgba(0,229,255,.12),rgba(122,90,248,.14));border:1px solid rgba(0,229,255,.22);border-radius:999px;color:var(--clr-cyan-glow);font-family:var(--font-heading);font-size:.8125rem;font-style:italic;font-weight:700}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:var(--space-3) var(--space-5);font-family:var(--font-heading);font-size:.9375rem;font-weight:700;font-style:italic;border-radius:var(--space-2);border:1px solid transparent;cursor:pointer;transition:background var(--transition-fast),color var(--transition-fast),border-color var(--transition-fast),box-shadow var(--transition-fast);text-decoration:none}
.btn--primary{background:linear-gradient(135deg,var(--clr-electric-green),#00CC8F);color:var(--clr-deep-blue);box-shadow:0 4px 20px rgba(0,255,170,.28)}
.btn--primary:hover{background:linear-gradient(135deg,#33FFBF,#00E6A0);color:var(--clr-deep-blue);box-shadow:0 6px 28px rgba(0,255,170,.45);transform:translateY(-1px)}
.btn--ghost{background:transparent;border-color:rgba(0,229,255,.4);color:var(--clr-cyan-glow)}
.btn--ghost:hover{background:rgba(0,229,255,.1);border-color:var(--clr-cyan-glow);color:var(--clr-white)}

/* ===== Header ===== */
.site-header{position:sticky;top:0;z-index:100;background:var(--header-bg);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:1px solid rgba(0,229,255,.12);box-shadow:0 4px 30px rgba(0,0,0,.35)}

.masthead{position:relative;display:flex;align-items:center;justify-content:center;max-width:var(--max-width);margin:0 auto;padding:var(--space-4) var(--space-6);gap:var(--space-4)}

.nav-toggle{position:absolute;left:var(--space-5);top:50%;transform:translateY(-50%);display:inline-flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;width:42px;height:42px;background:rgba(17,27,61,.7);border:1px solid rgba(0,229,255,.18);border-radius:var(--space-2);cursor:pointer;transition:background var(--transition-fast),border-color var(--transition-fast)}
.nav-toggle:hover{background:rgba(0,229,255,.1);border-color:var(--clr-cyan-glow)}
.nav-toggle__bar{display:block;width:18px;height:2px;background:var(--clr-white);border-radius:2px;transition:transform .3s ease,opacity .3s ease}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1){transform:translateY(7px) rotate(45deg);background:var(--clr-electric-green)}
.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);background:var(--clr-electric-green)}

.brand{display:inline-flex;flex-direction:column;align-items:center;text-decoration:none;transition:opacity var(--transition-fast)}
.brand:hover{opacity:.86}
.brand__mark{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;margin-bottom:var(--space-1);font-family:var(--font-heading);font-size:1.75rem;font-weight:900;font-style:italic;color:var(--clr-deep-blue);background:linear-gradient(135deg,var(--clr-electric-green),var(--clr-cyan-glow));border-radius:var(--space-2);transform:skewX(-8deg);box-shadow:0 0 20px rgba(0,255,170,.3),inset 0 -2px 4px rgba(0,0,0,.15)}
.brand__name{font-family:var(--font-heading);font-size:1.375rem;font-weight:900;font-style:italic;letter-spacing:.05em;color:var(--clr-white);line-height:1.2;text-shadow:0 2px 12px rgba(0,229,255,.15)}
.brand__tagline{font-size:.6875rem;color:var(--clr-muted-silver);letter-spacing:.24em;text-transform:uppercase;margin-top:2px}

.device-switch{position:absolute;right:var(--space-5);top:50%;transform:translateY(-50%);display:inline-flex;align-items:center;gap:var(--space-2);padding:var(--space-2) var(--space-4);background:transparent;border:1px solid rgba(0,255,170,.5);border-radius:999px;color:var(--clr-electric-green);font-size:.8125rem;font-weight:600;cursor:pointer;transition:background var(--transition-fast),color var(--transition-fast),box-shadow var(--transition-fast),border-color var(--transition-fast)}
.device-switch:hover{background:var(--clr-electric-green);color:var(--clr-deep-blue);box-shadow:0 0 22px rgba(0,255,170,.5);border-color:var(--clr-electric-green)}
.device-switch[aria-pressed="true"]{background:rgba(0,255,170,.12);border-color:var(--clr-electric-green);box-shadow:inset 0 0 0 1px rgba(0,255,170,.35),0 0 18px rgba(0,255,170,.2)}
.device-switch__icon{font-size:1rem;line-height:1;display:inline-block}
.device-switch__text{white-space:nowrap}

/* ===== Primary Nav (Desktop) ===== */
.primary-nav{border-top:1px solid rgba(0,229,255,.08);background:rgba(13,21,38,.55)}
.nav-list{display:flex;justify-content:center;gap:var(--space-5);max-width:var(--max-width);margin:0 auto;padding:0 var(--space-5)}
.nav-list__item{flex:none}
.nav-link{position:relative;display:block;padding:var(--space-3) var(--space-2);font-family:var(--font-heading);font-size:.8125rem;font-weight:700;font-style:italic;letter-spacing:.08em;color:var(--clr-muted-silver);text-transform:uppercase;text-decoration:none;transition:color var(--transition-fast)}
.nav-link::after{content:'';position:absolute;left:0;bottom:0;width:100%;height:2px;background:linear-gradient(90deg,var(--clr-electric-green),var(--clr-cyan-glow));transform:scaleX(0);transform-origin:left center;transition:transform .28s ease}
.nav-link:hover{color:var(--clr-white)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--clr-electric-green);text-shadow:0 0 16px rgba(0,255,170,.3)}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}

/* ===== Mobile Nav Drawer ===== */
@media (max-width:768px){
.site-header{border-bottom-width:0}
.masthead{padding:var(--space-3) var(--space-4);justify-content:center}
.nav-toggle{left:var(--space-4)}
.device-switch{right:var(--space-4);width:40px;height:40px;padding:0;justify-content:center;border-radius:50%}
.device-switch__text{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.brand__tagline{display:none}
.primary-nav{position:fixed;top:0;right:0;bottom:0;width:min(80vw,320px);background:linear-gradient(180deg,var(--clr-panel-blue),var(--clr-dark-zone));border-left:2px solid rgba(0,229,255,.25);border-top:0;transform:translateX(103%);transition:transform .36s cubic-bezier(.22,1,.36,1);z-index:990;overflow-y:auto;padding:var(--space-8) var(--space-5);box-shadow:-32px 0 60px rgba(0,0,0,.5)}
.primary-nav[data-open]{transform:translateX(0)}
.primary-nav[data-open]::before{content:'';position:fixed;inset:0;background:rgba(10,17,40,.72);z-index:-1}
.nav-list{flex-direction:column;gap:0;max-width:none;padding:0}
.nav-list__item{border-bottom:1px solid rgba(0,229,255,.08)}
.nav-link{padding:var(--space-4) var(--space-2);font-size:.9375rem}
.nav-link::after{height:2px;bottom:-1px}
}

/* ===== Device Forced Modes ===== */
html[data-device-mode="mobile"] .nav-toggle{display:inline-flex;position:fixed;top:var(--space-4);left:var(--space-4);z-index:1001}
html[data-device-mode="mobile"] .primary-nav{position:fixed;top:0;right:0;bottom:0;width:min(80vw,320px);background:linear-gradient(180deg,var(--clr-panel-blue),var(--clr-dark-zone));border-left:2px solid rgba(0,229,255,.25);border-top:0;transform:translateX(103%);transition:transform .36s cubic-bezier(.22,1,.36,1);z-index:990;overflow-y:auto;padding:var(--space-8) var(--space-5);box-shadow:-32px 0 60px rgba(0,0,0,.5)}
html[data-device-mode="mobile"] .primary-nav[data-open]{transform:translateX(0)}
html[data-device-mode="mobile"] .nav-list{flex-direction:column;gap:0;max-width:none;padding:0}
html[data-device-mode="mobile"] .nav-list__item{border-bottom:1px solid rgba(0,229,255,.08)}
html[data-device-mode="mobile"] .nav-link{padding:var(--space-4) var(--space-2);font-size:.9375rem;text-align:left}
html[data-device-mode="mobile"] .brand__tagline{display:none}
html[data-device-mode="desktop"] .nav-toggle{display:none}
html[data-device-mode="desktop"] .primary-nav{position:static;border-top:1px solid rgba(0,229,255,.08);background:rgba(13,21,38,.55);padding:0;transform:none;box-shadow:none;overflow:visible}
html[data-device-mode="desktop"] .nav-list{flex-direction:row;justify-content:center;gap:var(--space-5);max-width:var(--max-width);margin:0 auto;padding:0 var(--space-5)}
html[data-device-mode="desktop"] .nav-list__item{border-bottom:0}
html[data-device-mode="desktop"] .nav-link{padding:var(--space-3) var(--space-2);font-size:.8125rem;text-align:center}
html[data-device-mode="desktop"] .brand__tagline{display:block}

/* ===== Footer ===== */
.site-footer{position:relative;background:var(--clr-dark-zone);border-top:1px solid rgba(0,229,255,.06);margin-top:var(--space-8)}
.site-footer::before{content:'';display:block;position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--clr-electric-green) 0%,var(--clr-cyan-glow) 25%,var(--clr-purple-accent) 50%,var(--clr-signal-orange) 75%,var(--clr-lime-yellow) 100%);transform:skewX(-24deg);transform-origin:left bottom}
.footer-inner{max-width:var(--max-width);margin:0 auto;padding:var(--space-8) var(--space-5) var(--space-6)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.5fr;gap:var(--space-7)}
.footer-col--brand{padding-right:var(--space-5)}
.brand--footer{align-items:flex-start}
.brand--footer .brand__mark{width:38px;height:38px;font-size:1.5rem;margin-bottom:2px}
.brand--footer .brand__name{font-size:1.125rem;letter-spacing:.08em}
.footer-desc{margin-top:var(--space-4);font-size:.875rem;line-height:1.8;color:var(--clr-muted-silver)}
.footer-heading{position:relative;font-family:var(--font-heading);font-size:.875rem;font-weight:700;font-style:italic;letter-spacing:.12em;text-transform:uppercase;color:var(--clr-cyan-glow);padding-bottom:var(--space-3);margin-bottom:var(--space-4)}
.footer-heading::after{content:'';position:absolute;left:0;bottom:0;width:32px;height:2px;background:linear-gradient(90deg,var(--clr-electric-green),transparent)}
.footer-links{display:grid;gap:var(--space-2)}
.footer-link{position:relative;display:inline-block;color:var(--clr-muted-silver);font-size:.875rem;padding:var(--space-1) 0;transition:color var(--transition-fast),transform var(--transition-fast)}
.footer-link::before{content:'›';display:inline-block;margin-right:var(--space-2);color:var(--clr-electric-green);opacity:.6}
.footer-link:hover{color:var(--clr-electric-green);transform:translateX(4px)}
.footer-contact{display:grid;gap:var(--space-3)}
.footer-contact__item{display:flex;flex-direction:column;gap:2px;font-size:.875rem;color:var(--clr-muted-silver)}
.footer-contact__label{font-family:var(--font-heading);font-size:.6875rem;font-weight:700;font-style:italic;letter-spacing:.16em;text-transform:uppercase;color:var(--clr-purple-accent)}
.footer-contact__value{line-height:1.5;word-break:break-all}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:var(--space-3);margin-top:var(--space-7);padding-top:var(--space-5);border-top:1px solid rgba(0,229,255,.08);font-size:.8125rem;color:var(--clr-muted-silver)}
.footer-copy,.footer-icp{font-size:.8125rem}
.footer-icp{color:var(--clr-muted-silver);word-spacing:.2em}

/* ===== Breadcrumb ===== */
.breadcrumb{padding:var(--space-4) 0}
.breadcrumb__list{display:flex;flex-wrap:wrap;gap:var(--space-2);font-size:.8125rem;color:var(--clr-muted-silver)}
.breadcrumb__item{display:inline-flex;align-items:center}
.breadcrumb__item:not(:last-child)::after{content:'→';margin:0 var(--space-2);color:var(--clr-cyan-glow);font-size:.75rem}
.breadcrumb__link{color:var(--clr-muted-silver);text-decoration:none;transition:color var(--transition-fast)}
.breadcrumb__link:hover{color:var(--clr-electric-green)}
.breadcrumb__current{color:var(--clr-white);font-weight:600}

/* ===== Image Frame ===== */
.img-frame{position:relative;overflow:hidden;background:linear-gradient(145deg,rgba(0,229,255,.06),rgba(122,90,248,.1));border:1px solid var(--border-glow);border-radius:var(--space-3)}
.img-frame::before{content:'';display:block;padding-top:56.25%}
.img-frame__placeholder{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:var(--clr-muted-silver);font-size:.875rem;font-family:var(--font-heading);font-style:italic;letter-spacing:.1em}

/* ===== Responsive ===== */
@media (max-width:992px){
.footer-grid{grid-template-columns:1fr 1fr;gap:var(--space-6)}
.footer-col--brand{grid-column:1/-1;padding-right:0}
.split{grid-template-columns:1fr;gap:var(--space-6)}
}
@media (max-width:768px){
.section{padding:var(--space-6) 0}
.footer-grid{grid-template-columns:1fr 1fr;gap:var(--space-5)}
.footer-bottom{flex-direction:column;align-items:flex-start}
.nav-list{gap:var(--space-3)}
}
@media (max-width:480px){
.container{padding:0 var(--space-4)}
.footer-grid{grid-template-columns:1fr}
.footer-bottom{align-items:flex-start}
.brand__name{font-size:1.0625rem}
.masthead{padding:var(--space-2) var(--space-3)}
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion:reduce){
*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
.live-dot::after{display:none}
html[data-device-mode="mobile"] .primary-nav,.primary-nav{transition:none!important}
}