/* ========== Reset & Base ========== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{min-height:100vh;font-family:'Noto Sans SC','PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;font-size:16px;line-height:1.75;color:#E6F0F5;background:#0A1428;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
ul,ol{list-style:none}
a{color:inherit;text-decoration:none;transition:color .25s ease}
button{font:inherit;cursor:pointer;background:none;border:none;color:inherit}
input,textarea,select{font:inherit}
:focus-visible{outline:2px solid #00FF88;outline-offset:4px;border-radius:4px}
::selection{background:#00FF88;color:#041224}

/* ========== CSS Variables ========== */
:root{
  --bg-primary:#0A1428;
  --bg-alt:#0A1A2F;
  --bg-card:#1A2A3A;
  --green:#00FF88;
  --blue:#00BFFF;
  --orange:#FF7700;
  --purple:#9B59B6;
  --text-primary:#E6F0F5;
  --text-secondary:#8899AA;
  --border:rgba(0,191,255,.16);
  --font-headline:'Archivo Black','Arial Black','Noto Sans SC','PingFang SC',sans-serif;
  --font-body:'Noto Sans SC','PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
  --font-mono:'SF Mono','Consolas','Courier New',monospace;
  --container-width:1240px;
  --header-h:76px;
  --radius-lg:24px;
  --radius-md:14px;
  --radius-pill:999px;
  --shadow-green:0 0 30px rgba(0,255,136,.18);
  --shadow-blue:0 0 40px rgba(0,191,255,.12);
  --transition:.25s ease
}

/* ========== Shared Utilities ========== */
.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}
.skip-link{position:fixed;top:-120px;left:24px;z-index:9999;padding:12px 28px;background:#00FF88;color:#041224;font-weight:700;border-radius:0 0 12px 12px;transition:top .3s ease;box-shadow:0 4px 20px rgba(0,255,136,.3)}
.skip-link:focus{top:0;outline:none}
.container{max-width:var(--container-width);margin:0 auto;padding-left:24px;padding-right:24px}
.section{padding:96px 0}
.section-alt{background:var(--bg-alt)}
.section-label{display:inline-flex;align-items:center;gap:10px;padding:6px 18px;background:rgba(0,255,136,.1);border:1px solid rgba(0,255,136,.25);border-radius:var(--radius-pill);color:var(--green);font-size:13px;font-weight:700;letter-spacing:1px;text-transform:uppercase}
.section-label::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--green);box-shadow:0 0 12px var(--green)}

/* ========== Buttons ========== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;border-radius:var(--radius-pill);font-weight:700;font-size:15px;letter-spacing:.5px;transition:all .3s ease;white-space:nowrap;border:1px solid transparent;line-height:1.4}
.btn-primary{background:var(--green);color:#041224;box-shadow:var(--shadow-green)}
.btn-primary:hover{background:#33ff9f;transform:translateY(-2px);box-shadow:0 8px 30px rgba(0,255,136,.25)}
.btn-ghost{border-color:rgba(0,255,136,.45);color:var(--green);background:rgba(0,255,136,.05)}
.btn-ghost:hover{border-color:var(--green);background:rgba(0,255,136,.12);transform:translateY(-2px)}
.btn-blue{background:rgba(0,191,255,.12);border-color:rgba(0,191,255,.3);color:var(--blue)}
.btn-blue:hover{background:rgba(0,191,255,.2);transform:translateY(-2px)}

/* ========== Breadcrumb ========== */
.breadcrumb{padding:28px 0 8px}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-secondary)}
.breadcrumb-list a{color:var(--blue)}
.breadcrumb-list a:hover{color:var(--green)}
.breadcrumb-list li{display:flex;align-items:center;gap:8px}
.breadcrumb-list li+li::before{content:'/';color:#46566B;font-weight:300}

/* ========== Header ========== */
.site-header{position:sticky;top:0;z-index:1000;background:rgba(10,20,40,.72);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid transparent;transition:background .4s ease,border-color .4s ease,box-shadow .4s ease}
.site-header.is-scrolled{background:#0A1428;border-color:rgba(0,191,255,.14);box-shadow:0 8px 40px rgba(0,0,0,.45)}
.header-inner{max-width:var(--container-width);margin:0 auto;padding:0 24px;height:var(--header-h);display:flex;align-items:center;justify-content:space-between;position:relative}
.brand{display:inline-flex;align-items:center;gap:12px;flex-shrink:0}
.brand-dot{width:14px;height:14px;border-radius:50%;background:var(--green);box-shadow:0 0 16px var(--green),0 0 40px rgba(0,255,136,.4);animation:brandPulse 2.4s ease-in-out infinite;flex-shrink:0}
@keyframes brandPulse{0%,100%{transform:scale(1);opacity:1}50%{transform:scale(1.2);opacity:.65}}
.brand-text{font-family:'Archivo Black','Arial Black','Noto Sans SC',sans-serif;font-size:24px;font-weight:900;color:var(--text-primary);letter-spacing:1px;white-space:nowrap}
.brand-text span{color:var(--green);font-weight:900}
.header-nav{display:flex;align-items:center;gap:6px}
.nav-link{position:relative;display:inline-block;padding:10px 18px;font-size:15px;font-weight:500;color:var(--text-secondary);border-radius:var(--radius-pill);transition:color .25s ease,background .25s ease}
.nav-link:hover{color:var(--text-primary);background:rgba(0,191,255,.08)}
.nav-link[aria-current="page"]{color:var(--green);font-weight:700;background:rgba(0,255,136,.08)}
.nav-link[aria-current="page"]::after{content:'';position:absolute;left:50%;bottom:4px;transform:translateX(-50%);width:6px;height:6px;border-radius:50%;background:var(--green);box-shadow:0 0 12px var(--green)}
.header-cta{margin-left:10px}
.header-progress{position:absolute;left:0;bottom:-1px;height:2px;width:0;background:linear-gradient(90deg,var(--green),var(--blue));box-shadow:0 0 12px rgba(0,255,136,.4);z-index:1001;transition:width .1s linear}
.nav-toggle{display:none;flex-direction:column;justify-content:center;align-items:center;gap:5px;width:46px;height:46px;border-radius:12px;border:1px solid rgba(0,255,136,.25);background:rgba(0,255,136,.05);transition:background .25s ease,border-color .25s ease}
.nav-toggle:hover{background:rgba(0,255,136,.12);border-color:rgba(0,255,136,.5)}
.nav-toggle .toggle-line{display:block;width:22px;height:2px;border-radius:2px;background:var(--green);transition:transform .3s ease,opacity .3s ease}
.nav-toggle[aria-expanded="true"] .toggle-line:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .toggle-line:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .toggle-line:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ========== Footer ========== */
.site-footer{position:relative;background:#060D1A;border-top:1px solid rgba(0,191,255,.12);overflow:hidden}
.footer-glow{position:absolute;top:-120px;left:50%;transform:translateX(-50%);width:600px;height:300px;background:radial-gradient(ellipse at center,rgba(0,255,136,.07),transparent 70%);pointer-events:none}
.footer-inner{max-width:var(--container-width);margin:0 auto;padding:72px 24px 48px;display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:48px;position:relative;z-index:1}
.footer-brand .brand{margin-bottom:20px}
.footer-brand .brand-text{font-size:22px}
.footer-trust{color:var(--text-secondary);font-size:14px;line-height:1.8;max-width:300px;border-left:3px solid rgba(0,255,136,.4);padding-left:16px}
.footer-column h3.footer-title{font-size:15px;font-weight:700;color:var(--text-primary);letter-spacing:1.5px;text-transform:uppercase;margin-bottom:20px;position:relative;padding-bottom:10px}
.footer-column h3.footer-title::after{content:'';position:absolute;left:0;bottom:0;width:28px;height:2px;background:linear-gradient(90deg,var(--green),transparent)}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:var(--text-secondary);font-size:14px;transition:color .25s ease,padding-left .25s ease}
.footer-links a:hover{color:var(--green);padding-left:6px}
.footer-links li{color:var(--text-secondary);font-size:14px;line-height:1.7}
.footer-bottom{border-top:1px solid rgba(0,191,255,.08);padding:20px 0;position:relative;z-index:1}
.footer-bottom-inner{max-width:var(--container-width);margin:0 auto;padding:0 24px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}
.footer-bottom-inner span{color:#5C6B80;font-size:13px;letter-spacing:.5px}

/* ========== Grid ========== */
.grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.grid-2>*{grid-column:span 6}
.grid-3>*{grid-column:span 4}
.grid-4>*{grid-column:span 3}
.grid-2 .span-3{grid-column:span 3}
.grid-2 .span-9{grid-column:span 9}

/* ========== Card ========== */
.card{background:var(--bg-card);border-radius:var(--radius-lg);padding:32px;border:1px solid rgba(0,191,255,.08);transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;position:relative;overflow:hidden}
.card::before{content:'';position:absolute;top:0;left:0;width:100%;height:3px;background:linear-gradient(90deg,var(--green),var(--blue));transform:scaleX(0);transform-origin:left;transition:transform .4s ease}
.card:hover{transform:translateY(-4px);border-color:rgba(0,255,136,.3);box-shadow:var(--shadow-blue)}
.card:hover::before{transform:scaleX(1)}

/* ========== Tag ========== */
.tag{display:inline-flex;align-items:center;gap:8px;padding:5px 14px;border-radius:var(--radius-pill);font-size:12px;font-weight:700;letter-spacing:1px;line-height:1.4}
.tag::before{content:'';width:6px;height:6px;border-radius:50%}
.tag-green{background:rgba(0,255,136,.1);color:var(--green);border:1px solid rgba(0,255,136,.2)}
.tag-green::before{background:var(--green)}
.tag-orange{background:rgba(255,119,0,.1);color:var(--orange);border:1px solid rgba(255,119,0,.2)}
.tag-orange::before{background:var(--orange)}
.tag-blue{background:rgba(0,191,255,.1);color:var(--blue);border:1px solid rgba(0,191,255,.2)}
.tag-blue::before{background:var(--blue)}
.tag-purple{background:rgba(155,89,182,.12);color:var(--purple);border:1px solid rgba(155,89,182,.25)}
.tag-purple::before{background:var(--purple)}

/* ========== Image Frame ========== */
.image-frame{position:relative;border-radius:var(--radius-lg);overflow:hidden;background:linear-gradient(135deg,#0A1A2F,#12263A);border:1px solid rgba(0,191,255,.12);min-height:180px}
.image-frame img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease,opacity .5s ease}
.image-frame::after{content:'';position:absolute;inset:0;border-radius:inherit;box-shadow:inset 0 0 40px rgba(0,0,0,.25);pointer-events:none}
.image-frame:hover img{transform:scale(1.04)}
.image-frame .image-placeholder{display:flex;align-items:center;justify-content:center;min-height:180px;color:var(--text-secondary);font-size:14px;letter-spacing:1px;background:repeating-linear-gradient(45deg,rgba(0,191,255,.03) 0,rgba(0,191,255,.03) 12px,transparent 12px,transparent 24px)}
.image-caption{font-size:13px;color:var(--text-secondary);margin-top:10px;padding-left:4px;border-left:2px solid var(--blue);padding-left:10px}

/* ========== Data Number ========== */
.data-number{font-family:'SF Mono','Consolas','Courier New',monospace;font-size:clamp(48px,6vw,80px);font-weight:800;line-height:1;letter-spacing:-2px}
.data-number.green{color:var(--green);text-shadow:0 0 30px rgba(0,255,136,.3)}
.data-number.blue{color:var(--blue);text-shadow:0 0 30px rgba(0,191,255,.3)}
.data-number.orange{color:var(--orange)}
.data-unit{font-family:var(--font-body);font-size:14px;color:var(--text-secondary);margin-left:4px}

/* ========== Reveal ========== */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .6s ease,transform .6s ease}
.reveal.is-visible{opacity:1;transform:none}

/* ========== Tablet / Mobile ========== */
@media (max-width:1023px){
  :root{--header-h:64px}
  .section{padding:72px 0}
  .header-nav{position:fixed;top:0;right:0;bottom:0;width:min(320px,85vw);background:#070E1E;border-left:1px solid rgba(0,191,255,.18);flex-direction:column;justify-content:flex-start;align-items:stretch;gap:4px;padding:88px 20px 32px;transform:translateX(100%);transition:transform .35s cubic-bezier(.22,1,.36,1);z-index:1002;box-shadow:-20px 0 60px rgba(0,0,0,.5)}
  .header-nav[data-open]{transform:translateX(0)}
  .nav-toggle{display:flex;position:relative;z-index:1003}
  .header-cta{display:none}
  .nav-link{padding:14px 20px;font-size:17px;color:var(--text-primary)}
  .nav-link:hover{background:rgba(0,255,136,.06)}
  .nav-link[aria-current="page"]::after{left:20px;transform:none;top:50%;translate:0 -50%;width:6px;height:6px}
  .nav-link[aria-current="page"]::after{left:16px;transform:none;top:50%;width:6px;height:6px}
  .footer-inner{grid-template-columns:1fr 1fr;gap:40px}
  .footer-brand{grid-column:span 2;max-width:420px}
  .grid-2>*{grid-column:span 12}
  .grid-3>*{grid-column:span 6}
  .grid-4>*{grid-column:span 6}
}
@media (max-width:767px){
  .section{padding:56px 0}
  .footer-inner{grid-template-columns:1fr;gap:32px}
  .footer-brand{grid-column:span 1}
  .grid-3>*{grid-column:span 12}
  .grid-4>*{grid-column:span 12}
  .grid-2 .span-3,.grid-2 .span-9{grid-column:span 12}
  .breadcrumb-list{font-size:13px}
}

/* ========== 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}
  .brand-dot{animation:none}
  .reveal{opacity:1;transform:none}
  .card:hover{transform:none}
  .btn:hover{transform:none}
}