/*
   Template: zxjgbj — 光轨面板 / Orbital Showcase
   Style: Light Futuristic Technology (Apple + OpenAI + DeepMind)
   Colors: Snow white #F7F9FC + Tech blue #2563EB + Gradient accents
   Distinct from: solis (warm paper pillars), awevm (sage ticket), aibat (petrol directory),
                  zxjszx (dark cinema zigzag), cplinli (ice console tabs),
                  lucid (sky/orange), ember (rose cream), daylight (warm white)
   CSS Prefix: gbj
   WCAG AA: #0F172A on #FFFFFF ≈ 18:1 | #475569 on #FFFFFF ≈ 7:1
             #FFFFFF on #2563EB ≈ 6.8:1
*/
:root{
  --gbj-bg:#FFFFFF;--gbj-bg-alt:#F7F9FC;--gbj-surface:#FFFFFF;
  --gbj-text:#0F172A;--gbj-sec:#475569;--gbj-muted:#94A3B8;
  --gbj-primary:#2563EB;--gbj-primary-hover:#1D4ED8;--gbj-primary-light:rgba(37,99,235,.08);
  --gbj-accent-1:#818CF8;--gbj-accent-2:#06B6D4;
  --gbj-border:rgba(15,23,42,.08);--gbj-border-strong:rgba(15,23,42,.14);
  --gbj-shadow:0 1px 3px rgba(15,23,42,.06),0 8px 24px rgba(15,23,42,.04);
  --gbj-shadow-lg:0 4px 12px rgba(15,23,42,.08),0 24px 48px rgba(15,23,42,.06);
  --gbj-radius:20px;--gbj-radius-sm:14px;--gbj-radius-xs:10px;
  --gbj-z-nav:40;
  --gbj-ease:cubic-bezier(.16,1,.3,1);
  --gbj-font:-apple-system,"SF Pro Display","Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --gbj-mono:"SF Mono","Cascadia Code","Consolas","PingFang SC",monospace;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}
body{font-family:var(--gbj-font);background:var(--gbj-bg);color:var(--gbj-text);line-height:1.7;overflow-x:hidden;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
a{color:var(--gbj-primary);text-decoration:none;transition:color .2s var(--gbj-ease),background .2s var(--gbj-ease),border-color .2s var(--gbj-ease),opacity .2s var(--gbj-ease),box-shadow .2s var(--gbj-ease);cursor:pointer}
a:hover{color:var(--gbj-primary-hover)}
a:focus-visible,button:focus-visible{outline:2px solid var(--gbj-primary);outline-offset:3px}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
button{font-family:inherit;cursor:pointer}
.gbj-container{max-width:1120px;margin:0 auto;padding:0 24px}

/* ── NAV ── */
.gbj-nav{position:fixed;top:0;left:0;right:0;z-index:var(--gbj-z-nav);background:rgba(255,255,255,.72);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid transparent;transition:border-color .3s,background .3s}
.gbj-nav.scrolled{border-bottom-color:var(--gbj-border)}
.gbj-nav-inner{display:flex;align-items:center;gap:20px;min-height:64px}
.gbj-logo{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--gbj-text);letter-spacing:-.02em;flex-shrink:0;font-size:.95rem}
.gbj-logo:hover{color:var(--gbj-text)}
.gbj-logo-mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--gbj-primary),var(--gbj-accent-1));color:#fff;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.gbj-logo-mark svg{width:18px;height:18px}
.gbj-nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.gbj-nav-links a{font-size:.84rem;font-weight:600;color:var(--gbj-sec);padding:8px 14px;min-height:44px;display:inline-flex;align-items:center;border-radius:8px}
.gbj-nav-links a:hover{color:var(--gbj-text);background:var(--gbj-primary-light)}
.gbj-nav-links a[aria-current="page"]{color:var(--gbj-primary);background:var(--gbj-primary-light)}
.gbj-nav-cta{display:inline-flex;align-items:center;gap:6px;padding:9px 18px;background:var(--gbj-primary);color:#fff;font-size:.82rem;font-weight:700;border-radius:999px;min-height:44px;flex-shrink:0;box-shadow:0 1px 4px rgba(37,99,235,.3)}
.gbj-nav-cta:hover{background:var(--gbj-primary-hover);color:#fff;box-shadow:0 2px 8px rgba(37,99,235,.35)}
.gbj-nav-cta:active{opacity:.88}
.gbj-mobile-btn{display:none;background:transparent;border:1px solid var(--gbj-border-strong);border-radius:10px;padding:8px;color:var(--gbj-text);min-width:44px;min-height:44px}

/* ── HERO ── */
.gbj-hero{position:relative;padding:140px 0 80px;overflow:hidden;background:var(--gbj-bg-alt)}
.gbj-hero-orb{position:absolute;border-radius:50%;filter:blur(80px);opacity:.35;pointer-events:none}
.gbj-hero-orb-1{width:420px;height:420px;background:radial-gradient(circle,rgba(37,99,235,.5),transparent 70%);top:-60px;right:8%}
.gbj-hero-orb-2{width:320px;height:320px;background:radial-gradient(circle,rgba(129,140,248,.45),transparent 70%);bottom:-40px;left:5%}
.gbj-hero-orb-3{width:260px;height:260px;background:radial-gradient(circle,rgba(6,182,212,.35),transparent 70%);top:30%;left:50%}
.gbj-hero-inner{position:relative;z-index:1;text-align:center;max-width:720px;margin:0 auto}
.gbj-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;border-radius:999px;background:var(--gbj-primary-light);color:var(--gbj-primary);font-size:.75rem;font-weight:700;letter-spacing:.06em;margin-bottom:24px;border:1px solid rgba(37,99,235,.14)}
.gbj-badge svg{width:14px;height:14px}
.gbj-hero h1{font-size:3.4rem;font-weight:800;line-height:1.1;letter-spacing:-.04em;margin-bottom:20px;background:linear-gradient(135deg,var(--gbj-text) 40%,var(--gbj-primary) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.gbj-hero-lead{font-size:1.15rem;color:var(--gbj-sec);max-width:560px;margin:0 auto 32px;line-height:1.65}
.gbj-hero-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.gbj-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 28px;background:var(--gbj-primary);color:#fff;font-weight:700;border-radius:999px;min-height:48px;border:none;font-size:.9rem;box-shadow:0 1px 4px rgba(37,99,235,.25)}
.gbj-btn:hover{background:var(--gbj-primary-hover);color:#fff;box-shadow:0 2px 8px rgba(37,99,235,.3);transform:translateY(-1px)}
.gbj-btn:active{opacity:.88;transform:none}
.gbj-btn-outline{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 24px;background:var(--gbj-surface);color:var(--gbj-text);font-weight:700;border-radius:999px;border:1px solid var(--gbj-border-strong);min-height:48px;font-size:.9rem}
.gbj-btn-outline:hover{border-color:var(--gbj-primary);color:var(--gbj-primary);background:var(--gbj-primary-light)}
.gbj-hero-visual{position:relative;margin-top:56px;border-radius:var(--gbj-radius);overflow:hidden;box-shadow:var(--gbj-shadow-lg);border:1px solid var(--gbj-border)}
.gbj-hero-visual img{width:100%;height:360px;object-fit:cover}

/* ── SECTIONS ── */
.gbj-section{padding:88px 0;scroll-margin-top:80px}
.gbj-section-alt{background:var(--gbj-bg-alt)}
.gbj-sec-head{max-width:640px;margin-bottom:48px}
.gbj-sec-head.is-center{margin-left:auto;margin-right:auto;text-align:center}
.gbj-label{display:inline-flex;align-items:center;gap:6px;font-size:.72rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--gbj-primary);margin-bottom:14px}
.gbj-sec-head h2{font-size:2.4rem;font-weight:800;letter-spacing:-.03em;line-height:1.2;margin-bottom:10px}
.gbj-sec-head p{color:var(--gbj-sec);font-size:1.02rem}

/* ── SHOWCASE PANELS (unique module: stacked full-section spotlights) ── */
.gbj-showcase{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.gbj-showcase.is-reverse{direction:rtl}
.gbj-showcase.is-reverse > *{direction:ltr}
.gbj-showcase-visual{position:relative;border-radius:var(--gbj-radius);overflow:hidden;border:1px solid var(--gbj-border);box-shadow:var(--gbj-shadow)}
.gbj-showcase-visual img{width:100%;height:320px;object-fit:cover}
.gbj-showcase-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(37,99,235,.06),transparent 60%);pointer-events:none}
.gbj-showcase-copy{padding:8px 0}
.gbj-showcase-num{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,var(--gbj-primary),var(--gbj-accent-1));color:#fff;font-weight:800;font-size:.9rem;margin-bottom:16px}
.gbj-showcase-copy h3{font-size:1.6rem;font-weight:800;letter-spacing:-.02em;line-height:1.25;margin-bottom:10px}
.gbj-showcase-copy p{color:var(--gbj-sec);margin-bottom:18px;line-height:1.7}
.gbj-text-link{font-weight:700;color:var(--gbj-primary);display:inline-flex;align-items:center;gap:6px}
.gbj-text-link:hover{color:var(--gbj-primary-hover);gap:10px}
.gbj-text-link svg{transition:transform .2s var(--gbj-ease)}
.gbj-text-link:hover svg{transform:translateX(3px)}

/* ── TECH SPECS RIBBON ── */
.gbj-specs{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--gbj-border);border-radius:var(--gbj-radius);overflow:hidden;box-shadow:var(--gbj-shadow)}
.gbj-spec{background:var(--gbj-surface);padding:32px 24px;text-align:center}
.gbj-spec-icon{width:44px;height:44px;margin:0 auto 14px;border-radius:12px;background:var(--gbj-primary-light);color:var(--gbj-primary);display:flex;align-items:center;justify-content:center}
.gbj-spec-icon svg{width:22px;height:22px}
.gbj-spec-val{font-size:2rem;font-weight:800;letter-spacing:-.03em;color:var(--gbj-text);line-height:1.1}
.gbj-spec-label{font-size:.82rem;color:var(--gbj-muted);margin-top:6px;font-weight:600}

/* ── BENTO GRID (2×2 asymmetric capability cards) ── */
.gbj-bento{display:grid;grid-template-columns:1.2fr .8fr;grid-template-rows:auto auto;gap:16px}
.gbj-bento-card{background:var(--gbj-surface);border:1px solid var(--gbj-border);border-radius:var(--gbj-radius);padding:32px;position:relative;overflow:hidden}
.gbj-bento-card::before{content:"";position:absolute;top:0;right:0;width:180px;height:180px;background:radial-gradient(circle,rgba(37,99,235,.06),transparent 70%);pointer-events:none}
.gbj-bento-card h3{font-size:1.25rem;font-weight:800;letter-spacing:-.01em;margin-bottom:8px}
.gbj-bento-card p{color:var(--gbj-sec);font-size:.92rem;line-height:1.65}
.gbj-bento-card img{width:100%;height:180px;object-fit:cover;border-radius:var(--gbj-radius-xs);margin-top:16px;border:1px solid var(--gbj-border)}
.gbj-bento-card.is-tall{grid-row:span 2}
.gbj-bento-card.is-tall img{height:260px}
.gbj-bento-icon{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;margin-bottom:14px;flex-shrink:0}
.gbj-bento-icon.is-blue{background:rgba(37,99,235,.08);color:var(--gbj-primary)}
.gbj-bento-icon.is-violet{background:rgba(129,140,248,.1);color:var(--gbj-accent-1)}
.gbj-bento-icon.is-cyan{background:rgba(6,182,212,.1);color:var(--gbj-accent-2)}

/* ── ACCORDION FAQ ── */
.gbj-faq{max-width:720px;margin:0 auto}
.gbj-faq-item{border-bottom:1px solid var(--gbj-border)}
.gbj-faq-item:first-child{border-top:1px solid var(--gbj-border)}
.gbj-faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;padding:20px 0;background:transparent;border:none;color:var(--gbj-text);font-size:1.05rem;font-weight:700;text-align:left;min-height:48px;cursor:pointer}
.gbj-faq-q svg{flex-shrink:0;color:var(--gbj-muted);transition:transform .25s var(--gbj-ease),color .2s}
.gbj-faq-q[aria-expanded="true"] svg{transform:rotate(45deg);color:var(--gbj-primary)}
.gbj-faq-a{overflow:hidden;max-height:0;transition:max-height .3s var(--gbj-ease)}
.gbj-faq-a-inner{padding:0 0 20px;color:var(--gbj-sec);line-height:1.7;font-size:.95rem}

/* ── LINKS + CTA ── */
.gbj-recommend-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px}
.gbj-recommend-grid a{display:block;padding:14px 16px;background:var(--gbj-surface);border:1px solid var(--gbj-border);border-radius:var(--gbj-radius-xs);font-size:.84rem;color:var(--gbj-sec);min-height:48px;transition:border-color .2s,box-shadow .2s}
.gbj-recommend-grid a:hover{color:var(--gbj-primary);border-color:var(--gbj-primary);box-shadow:0 2px 8px rgba(37,99,235,.08)}
.gbj-cta-section{padding:0 0 88px}
.gbj-cta-box{background:linear-gradient(135deg,var(--gbj-primary),var(--gbj-accent-1));border-radius:var(--gbj-radius);padding:56px 40px;text-align:center;position:relative;overflow:hidden}
.gbj-cta-box::before{content:"";position:absolute;top:-60px;right:-60px;width:260px;height:260px;background:radial-gradient(circle,rgba(255,255,255,.12),transparent 70%);pointer-events:none}
.gbj-cta-box h2{font-size:2.2rem;font-weight:800;margin-bottom:10px;color:#fff;letter-spacing:-.02em}
.gbj-cta-box p{margin-bottom:24px;color:rgba(255,255,255,.82);font-size:1.02rem}
.gbj-cta-box .gbj-btn{background:#fff;color:var(--gbj-primary);box-shadow:0 2px 8px rgba(0,0,0,.1)}
.gbj-cta-box .gbj-btn:hover{background:#F0F4FF;color:var(--gbj-primary-hover);transform:translateY(-1px)}

/* ── FOOTER ── */
.gbj-footer{border-top:1px solid var(--gbj-border);padding:48px 0 28px;background:var(--gbj-bg-alt)}
.gbj-footer-top{display:grid;grid-template-columns:1.4fr .8fr .8fr;gap:32px;margin-bottom:32px}
.gbj-footer-desc{font-size:.85rem;color:var(--gbj-sec);max-width:380px;margin-top:10px}
.gbj-footer-nav h4{font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--gbj-primary);margin-bottom:12px;font-weight:700}
.gbj-footer-nav a{display:inline-flex;min-height:36px;align-items:center;font-size:.86rem;color:var(--gbj-sec)}
.gbj-footer-nav a:hover{color:var(--gbj-primary)}
.gbj-footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:20px;border-top:1px solid var(--gbj-border);font-size:.8rem;color:var(--gbj-muted)}
.gbj-footer-bottom a{color:var(--gbj-sec)}

/* ── INNER PAGES ── */
.gbj-page-hero{padding:128px 0 48px;background:var(--gbj-bg-alt);position:relative;overflow:hidden}
.gbj-page-hero::before{content:"";position:absolute;top:-80px;right:10%;width:300px;height:300px;background:radial-gradient(circle,rgba(37,99,235,.08),transparent 70%);pointer-events:none}
.gbj-page-hero h1{font-size:2.8rem;font-weight:800;letter-spacing:-.03em;margin-bottom:10px}
.gbj-page-hero p{color:var(--gbj-sec);font-size:1.05rem}
.gbj-page-hero .gbj-label{margin-bottom:14px}

/* SERVICE LIST */
.gbj-svc-list{display:flex;flex-direction:column;gap:0}
.gbj-svc-item{display:grid;grid-template-columns:64px 160px 1fr auto;gap:20px;align-items:center;padding:20px 0;border-bottom:1px solid var(--gbj-border);color:var(--gbj-text);transition:background .2s}
.gbj-svc-item:first-child{border-top:1px solid var(--gbj-border)}
.gbj-svc-item:hover{background:var(--gbj-primary-light)}
.gbj-svc-num{font-size:1.1rem;font-weight:800;color:var(--gbj-primary);font-variant-numeric:tabular-nums}
.gbj-svc-thumb{width:160px;height:90px;object-fit:cover;border-radius:var(--gbj-radius-xs);border:1px solid var(--gbj-border)}
.gbj-svc-copy h3{font-size:1.08rem;font-weight:700;margin-bottom:4px}
.gbj-svc-copy p{color:var(--gbj-sec);font-size:.86rem}
.gbj-svc-go{font-weight:700;color:var(--gbj-primary);white-space:nowrap;display:inline-flex;align-items:center;gap:4px}

/* ABOUT SPLIT */
.gbj-split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.gbj-split img{width:100%;height:320px;object-fit:cover;border-radius:var(--gbj-radius);border:1px solid var(--gbj-border);box-shadow:var(--gbj-shadow)}
.gbj-split h2{font-size:2rem;font-weight:800;letter-spacing:-.02em;margin-bottom:14px}
.gbj-split p{color:var(--gbj-sec);margin-bottom:14px;line-height:1.7}

/* CONTACT + 404 */
.gbj-stage{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:32px 16px;background:var(--gbj-bg-alt)}
.gbj-contact-card{width:min(460px,100%);background:var(--gbj-surface);border:1px solid var(--gbj-border);border-radius:var(--gbj-radius);padding:40px 36px;text-align:center;box-shadow:var(--gbj-shadow-lg)}
.gbj-contact-card h2{font-size:2rem;font-weight:800;margin:14px 0 8px;letter-spacing:-.02em}
.gbj-contact-card > p{color:var(--gbj-sec);margin-bottom:24px}
.gbj-contact-list{text-align:left;margin-bottom:24px}
.gbj-contact-item{padding:14px 16px;background:var(--gbj-bg-alt);border-radius:var(--gbj-radius-xs);margin-bottom:8px;border:1px solid var(--gbj-border)}
.gbj-contact-item b{display:block;font-size:.95rem}
.gbj-contact-item span{color:var(--gbj-muted);font-size:.82rem}
.gbj-btn-block{width:100%}
.gbj-timer{margin-top:16px;font-size:.85rem;color:var(--gbj-muted)}
.gbj-timer strong{color:var(--gbj-primary);font-size:1.1rem}
.gbj-404{min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:32px 16px;background:var(--gbj-bg-alt)}
.gbj-404 h1{font-size:7rem;font-weight:800;line-height:1;background:linear-gradient(135deg,var(--gbj-primary),var(--gbj-accent-1));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.gbj-404 h2{font-size:1.6rem;font-weight:800;margin:10px 0 12px}
.gbj-404 p{color:var(--gbj-sec);margin-bottom:28px}

/* ── REVEAL ANIMATION ── */
.gbj-reveal{opacity:0;transform:translateY(16px);transition:opacity .4s var(--gbj-ease),transform .4s var(--gbj-ease)}
.gbj-reveal.visible{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .gbj-reveal{opacity:1;transform:none}
}

/* ── RESPONSIVE ── */
@media(max-width:960px){
  .gbj-hero h1{font-size:2.6rem}
  .gbj-hero-visual img{height:240px}
  .gbj-showcase,.gbj-split,.gbj-footer-top{grid-template-columns:1fr}
  .gbj-showcase.is-reverse{direction:ltr}
  .gbj-showcase-visual img,.gbj-split img{height:240px}
  .gbj-bento{grid-template-columns:1fr}
  .gbj-bento-card.is-tall{grid-row:auto}
  .gbj-specs{grid-template-columns:1fr 1fr}
  .gbj-svc-item{grid-template-columns:48px 1fr;gap:10px 12px}
  .gbj-svc-thumb{display:none}
  .gbj-svc-go{grid-column:2}
  .gbj-nav-links{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;align-items:stretch;background:rgba(255,255,255,.96);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--gbj-border);padding:8px 16px 16px;margin-left:0}
  .gbj-nav-links.active{display:flex}
  .gbj-nav-links a{min-height:48px;border-radius:8px}
  .gbj-nav-cta{margin-left:auto;padding:8px 14px;font-size:.78rem}
  .gbj-mobile-btn{display:inline-flex;align-items:center;justify-content:center}
  .gbj-cta-box{padding:36px 20px}
}
@media(max-width:640px){
  .gbj-container{padding:0 16px}
  .gbj-section{padding:56px 0}
  .gbj-sec-head h2,.gbj-page-hero h1{font-size:1.8rem}
  .gbj-hero{padding:120px 0 56px}
  .gbj-hero h1{font-size:2rem}
  .gbj-specs{grid-template-columns:1fr}
  .gbj-showcase-copy h3{font-size:1.3rem}
}