*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#FEFCF8;--bg-alt:#F5F3EE;--bg-card:#FFFFFF;
  --text-primary:#171717;--text-secondary:#555;--text-tertiary:#999;
  --accent:#2563EB;--accent-light:#EFF6FF;--accent-hover:#1D4ED8;
  --border:#E8E6E1;--border-light:#F0EDE6;
  --shadow-sm:0 1px 3px rgba(0,0,0,.04);
  --shadow-md:0 4px 20px rgba(0,0,0,.06);
  --shadow-lg:0 12px 40px rgba(0,0,0,.08);
  --radius:12px;--radius-lg:20px;
  --font-serif:'Playfair Display',Georgia,serif;
  --font-sans:'Inter',-apple-system,sans-serif;
  --font-mono:'JetBrains Mono','SF Mono',monospace;
  --ease:cubic-bezier(.4,0,.2,1);--transition:.35s var(--ease);
}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font-sans);background:var(--bg);color:var(--text-primary);line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}
::selection{background:var(--accent-light);color:var(--accent)}
a{color:var(--accent);text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--accent-hover)}
img{max-width:100%;height:auto;display:block}

.nav{position:fixed;top:0;left:0;right:0;z-index:100;padding:16px 24px;transition:all var(--transition)}
.nav.scrolled{background:rgba(254,252,248,.88);backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid var(--border-light);box-shadow:var(--shadow-sm)}
.nav-inner{max-width:1120px;margin:auto;display:flex;align-items:center;justify-content:space-between}
.nav-logo{display:flex;flex-direction:column;line-height:1.2;cursor:pointer}
.nav-logo-main{font-family:var(--font-serif);font-size:22px;font-weight:700;color:var(--text-primary);letter-spacing:-.02em}
.nav-logo-sub{font-size:10px;color:var(--text-tertiary);letter-spacing:.15em;text-transform:uppercase;font-weight:500;margin-top:1px}
.nav-links{display:flex;gap:32px;align-items:center}
.nav-link{font-size:14px;font-weight:500;color:var(--text-secondary);position:relative;letter-spacing:-.01em}
.nav-link::after{content:'';position:absolute;bottom:-4px;left:0;width:0;height:1.5px;background:var(--accent);transition:width var(--transition)}
.nav-link:hover{color:var(--text-primary)}
.nav-link:hover::after,.nav-link.active::after{width:100%}
.nav-link.active{color:var(--accent)}
.nav-cta{padding:8px 20px;background:var(--text-primary);color:#fff;border-radius:100px;font-size:13px;font-weight:600;letter-spacing:-.01em;transition:all var(--transition)}
.nav-cta:hover{background:var(--accent);color:#fff;transform:translateY(-1px);box-shadow:0 4px 14px rgba(37,99,235,.3)}
.nav-mobile-toggle{display:none;width:36px;height:36px;border:none;background:none;cursor:pointer;flex-direction:column;gap:5px;justify-content:center}
.nav-mobile-toggle span{width:18px;height:1.5px;background:var(--text-primary);border-radius:2px;transition:all var(--transition)}

.section{padding:100px 24px;position:relative}
.section-inner{max-width:1080px;margin:auto}
.section-label{font-size:11px;font-weight:600;color:var(--accent);letter-spacing:.2em;text-transform:uppercase;margin-bottom:16px;display:inline-block}
.section-title{font-family:var(--font-serif);font-size:clamp(36px,5vw,54px);font-weight:600;color:var(--text-primary);line-height:1.15;letter-spacing:-.03em;margin-bottom:20px}
.section-desc{font-size:17px;color:var(--text-secondary);max-width:600px;line-height:1.7;margin-bottom:48px}

.fade-up{opacity:0;transform:translateY(24px);transition:all .6s var(--ease)}
.fade-up.visible{opacity:1;transform:translateY(0)}
.stagger-1{transition-delay:.1s}.stagger-2{transition-delay:.2s}.stagger-3{transition-delay:.3s}.stagger-4{transition-delay:.4s}.stagger-5{transition-delay:.5s}

.btn-primary{padding:14px 36px;background:var(--text-primary);color:#fff;border-radius:100px;font-size:15px;font-weight:600;letter-spacing:-.01em;transition:all var(--transition);display:inline-flex;align-items:center;gap:8px;border:none;cursor:pointer}
.btn-primary:hover{background:var(--accent);transform:translateY(-2px);box-shadow:0 8px 30px rgba(37,99,235,.25)}
.btn-secondary{padding:14px 36px;background:transparent;color:var(--text-primary);border:1.5px solid var(--border);border-radius:100px;font-size:15px;font-weight:500;transition:all var(--transition);cursor:pointer}
.btn-secondary:hover{border-color:var(--text-primary);transform:translateY(-2px)}

.card{background:var(--bg-card);border:1px solid var(--border-light);border-radius:var(--radius-lg);padding:32px;transition:all var(--transition);position:relative;overflow:hidden;cursor:pointer}
.card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--accent),#06B6D4);opacity:0;transition:opacity var(--transition)}
.card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.card:hover::before{opacity:1}

.status-badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;padding:4px 12px;border-radius:100px}
.status-released{background:#ECFDF5;color:#059669}
.status-dev{background:#EFF6FF;color:#2563EB}
.status-plan{background:#F9FAFB;color:#6B7280}

.demo-box{margin-top:24px;background:var(--bg-card);border:1px solid var(--border-light);border-radius:var(--radius-lg);overflow:hidden}
.demo-header{padding:12px 20px;background:var(--bg-alt);font-size:11px;font-weight:600;color:var(--text-tertiary);text-transform:uppercase;letter-spacing:.1em;display:flex;align-items:center;gap:8px}
.demo-header .dot{width:6px;height:6px;border-radius:50%;background:var(--accent)}
.demo-body{padding:24px;min-height:180px;position:relative}

.spec-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:12px}
.spec-item{padding:16px;background:var(--bg-alt);border-radius:var(--radius);text-align:center}
.spec-value{font-family:var(--font-serif);font-size:22px;font-weight:600;color:var(--text-primary)}
.spec-key{font-size:12px;color:var(--text-tertiary);margin-top:2px;font-weight:500}

.feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px}
.feature-card{padding:20px;background:var(--bg-card);border:1px solid var(--border-light);border-radius:var(--radius);transition:all var(--transition)}
.feature-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.feature-icon{font-size:24px;margin-bottom:8px}
.feature-name{font-size:14px;font-weight:600;color:var(--text-primary);margin-bottom:4px}
.feature-desc{font-size:13px;color:var(--text-tertiary);line-height:1.5}

.pipeline-stage{display:grid;grid-template-columns:60px 1fr auto;gap:24px;align-items:start;padding:36px 0;border-bottom:1px solid var(--border-light);opacity:0;transform:translateY(20px);transition:all .6s var(--ease)}
.pipeline-stage.visible{opacity:1;transform:translateY(0)}
.pipeline-num{font-family:var(--font-serif);font-size:48px;font-weight:700;color:var(--border-light);line-height:1;transition:color .6s .2s}
.pipeline-stage.visible .pipeline-num{color:var(--accent-light)}
.pipeline-title{font-family:var(--font-serif);font-size:24px;font-weight:600;color:var(--text-primary);margin-bottom:4px}
.pipeline-subtitle{font-size:14px;color:var(--text-tertiary);margin-bottom:16px}
.pipeline-techs{display:flex;flex-wrap:wrap;gap:8px}
.pipeline-tech{padding:6px 16px;background:var(--bg-alt);border:1px solid var(--border-light);border-radius:100px;font-size:13px;font-weight:500;color:var(--text-secondary);transition:all .3s}
.pipeline-tech:hover{background:var(--accent-light);color:var(--accent);border-color:var(--accent)}
.pipeline-metric{font-family:var(--font-serif);font-size:32px;font-weight:700;color:var(--accent);text-align:right;white-space:nowrap}
.pipeline-metric-label{font-size:12px;color:var(--text-tertiary);text-align:right;margin-top:2px}

.footer{padding:48px 24px;border-top:1px solid var(--border)}
.footer-inner{max-width:1080px;margin:auto;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:20px}
.footer-brand{display:flex;flex-direction:column}
.footer-logo{font-family:var(--font-serif);font-size:20px;font-weight:700;color:var(--text-primary)}
.footer-tagline{font-size:11px;color:var(--text-tertiary);margin-top:2px}
.footer-links{display:flex;gap:28px}
.footer-link{font-size:13px;color:var(--text-secondary);transition:color var(--transition)}
.footer-link:hover{color:var(--text-primary)}
.footer-copy{font-size:12px;color:var(--text-tertiary);width:100%;text-align:center;margin-top:32px;padding-top:24px;border-top:1px solid var(--border-light)}

@media(max-width:768px){
  .nav-links{display:none;position:absolute;top:100%;left:0;right:0;background:var(--bg);padding:20px;flex-direction:column;gap:16px;border-bottom:1px solid var(--border);box-shadow:var(--shadow-md)}
  .nav-links.open{display:flex}
  .nav-mobile-toggle{display:flex}
  .section{padding:72px 20px}
  .pipeline-stage{grid-template-columns:1fr;gap:12px}
  .pipeline-metric{text-align:left}
  .pipeline-num{font-size:36px}
}

.contact-modal-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.45);backdrop-filter:blur(8px);z-index:1000;display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transition:all .3s var(--ease)}
.contact-modal-overlay.active{opacity:1;visibility:visible}
.contact-modal{background:#fff;border-radius:var(--radius-lg);padding:40px 36px 32px;text-align:center;max-width:360px;width:90%;box-shadow:var(--shadow-lg);transform:scale(.92) translateY(16px);transition:all .35s var(--ease);position:relative}
.contact-modal-overlay.active .contact-modal{transform:scale(1) translateY(0)}
.contact-modal-close{position:absolute;top:12px;right:14px;width:32px;height:32px;border:none;background:none;cursor:pointer;display:flex;align-items:center;justify-content:center;border-radius:50%;color:var(--text-tertiary);transition:all .2s;font-size:18px;line-height:1}
.contact-modal-close:hover{background:var(--bg-alt);color:var(--text-primary)}
.contact-modal-title{font-family:var(--font-serif);font-size:22px;font-weight:600;color:var(--text-primary);margin-bottom:6px}
.contact-modal-subtitle{font-size:14px;color:var(--text-tertiary);margin-bottom:24px}
.contact-modal-qrcode{width:240px;height:240px;margin:0 auto 20px;border-radius:12px;overflow:hidden;border:1px solid var(--border-light);box-shadow:0 4px 16px rgba(0,0,0,.06)}
.contact-modal-qrcode img{width:100%;height:100%;object-fit:contain}
.contact-modal-hint{font-size:13px;color:var(--text-secondary);line-height:1.5}
.contact-modal-hint i{width:14px;height:14px;display:inline;vertical-align:middle;margin-right:4px}