*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Noto Sans SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  background:#fff;color:#1a1f26;line-height:1.6;
  -webkit-font-smoothing:antialiased
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
h1,h2,h3,h4{font-weight:600;line-height:1.3}
h1{font-size:clamp(1.75rem,4vw,3rem);letter-spacing:-0.02em}
h2{font-size:clamp(1.35rem,2.5vw,2rem);letter-spacing:-0.01em}
h3{font-size:1.1rem}
.container{width:100%;max-width:1120px;margin:0 auto;padding:0 28px}

.reveal{opacity:0;transform:translateY(20px);transition:opacity 0.5s ease,transform 0.5s ease}
.reveal.visible{opacity:1;transform:translateY(0)}
.reveal-d1{transition-delay:0.08s}
.reveal-d2{transition-delay:0.16s}
.reveal-d3{transition-delay:0.24s}

/* ===== Navbar ===== */
.navbar{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:64px;display:flex;align-items:center;
  background:rgba(255,255,255,0.96);backdrop-filter:blur(12px);
  border-bottom:1px solid #e5e9f0
}
.navbar .container{display:flex;align-items:center;justify-content:space-between}
.navbar-brand{display:flex;align-items:center;gap:10px;color:#1a1f26;font-weight:600;font-size:1rem}
.logo-mark{
  width:30px;height:30px;border-radius:2px;
  display:flex;align-items:center;justify-content:center;
  font-size:0.85rem;font-weight:700;color:#fff;
  background:#1a56db
}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{
  color:#5a6270;font-size:0.88rem;font-weight:400;
  transition:color 0.15s
}
.nav-links a:hover{color:#1a56db}
.nav-links a.active{color:#1a56db;font-weight:500}
.nav-links .nav-download{background:#1a56db;color:#fff;padding:6px 16px;border-radius:2px;font-size:0.8rem}
.nav-links .nav-download:hover{background:#1648c0;color:#fff}
.lang-switch{
  font-size:0.8rem;padding:4px 12px;
  border:1px solid #d0d5dd;border-radius:2px;
  color:#5a6270;transition:all 0.15s;margin-left:4px
}
.lang-switch:hover{border-color:#1a56db;color:#1a56db}
.nav-toggle{display:none;background:none;border:none;color:#1a1f26;font-size:1.4rem;cursor:pointer;padding:2px}

/* ===== Hero ===== */
.hero{
  background:#f6f7f9;padding:120px 0 80px;
  border-bottom:1px solid #e5e9f0
}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.hero h1{color:#1a1f26;margin-bottom:1rem}
.hero-sub{
  color:#5a6270;font-size:1rem;line-height:1.7;max-width:48ch;margin-bottom:2rem
}
.hero-badges{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:1.25rem}
.hero-badges span{
  font-size:0.72rem;padding:3px 10px;font-weight:500;
  background:#eef3fc;color:#1a56db;border-radius:2px
}
.hero-actions{display:flex;gap:10px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:6px;
  padding:12px 28px;font-size:0.9rem;font-weight:500;
  transition:all 0.15s;cursor:pointer;border:none;border-radius:2px
}
.btn-primary{background:#1a56db;color:#fff}
.btn-primary:hover{background:#1648c0}
.btn-secondary{background:transparent;color:#1a1f26;border:1px solid #d0d5dd}
.btn-secondary:hover{border-color:#1a56db;color:#1a56db}

/* Hero visual */
.hero-visual{
  background:#fff;border:1px solid #e5e9f0;border-radius:2px;
  overflow:hidden;box-shadow:0 1px 3px rgba(0,0,0,0.04)
}
.mock-ui{display:flex;flex-direction:column}
.mock-ui-header{
  display:flex;align-items:center;gap:6px;
  padding:10px 14px;border-bottom:1px solid #f0f1f3;
  background:#fafbfc
}
.mock-ui-dot{width:5px;height:5px;border-radius:50%;background:#d0d5dd}
.mock-ui-body{
  padding:20px;display:grid;grid-template-columns:1fr 1.8fr;gap:16px;
  min-height:240px
}
.mock-sidebar{background:#fafbfc;border-radius:2px;padding:12px;display:flex;flex-direction:column;gap:6px}
.mock-sidebar-item{height:7px;border-radius:2px;background:#e5e9f0}
.mock-sidebar-item:nth-child(1){width:70%}
.mock-sidebar-item:nth-child(2){width:55%}
.mock-sidebar-item:nth-child(4){width:45%;margin-top:3px;background:#dbeafe}
.mock-canvas{
  background:#fafbfc;border-radius:2px;
  display:flex;align-items:center;justify-content:center;
  min-height:160px;border:1px dashed #e5e9f0
}
.mock-canvas .label-preview{width:60%;padding:10px 14px;background:#fff;border-radius:2px;text-align:center;border:1px solid #f0f1f3}
.mock-canvas .label-preview .barcode-sim{height:32px;background:repeating-linear-gradient(90deg,#d0d5dd 0,#d0d5dd 2px,transparent 2px,transparent 6px);margin-bottom:6px;border-radius:1px}
.mock-canvas .label-preview .text-sim{height:5px;background:#e5e9f0;border-radius:2px;margin-bottom:3px}
.mock-canvas .label-preview .text-sim:last-child{width:55%}

/* ===== Sections ===== */
.section{padding:80px 0}
.section-alt{background:#f6f7f9}
.section-border{border-bottom:1px solid #e5e9f0}

/* ===== Intro ===== */
.intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start}
.intro-text h2{margin-bottom:1.25rem}
.intro-text > p{color:#5a6270;font-size:0.95rem;line-height:1.7;margin-bottom:1.25rem}
.section-tag{
  display:inline-block;font-size:0.72rem;font-weight:600;
  color:#1a56db;letter-spacing:0.04em;text-transform:uppercase;
  margin-bottom:0.75rem
}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:#e5e9f0;border-radius:2px;overflow:hidden;margin-top:28px}
.stat-card{background:#fff;padding:24px 16px;text-align:center}
.stat-card .num{font-size:1.75rem;font-weight:600;color:#1a56db;margin-bottom:2px}
.stat-card .label{font-size:0.78rem;color:#8895a8}

/* ===== Features ===== */
.features{max-width:860px;margin:0 auto}
.feature-item{
  padding:36px 0;
  border-bottom:1px solid #e5e9f0
}
.feature-item:last-child{border-bottom:none}
.feature-item h3{color:#1a1f26;margin-bottom:6px}
.feature-item .meta{
  font-size:0.78rem;color:#8895a8;margin-bottom:10px
}
.feature-item p{color:#5a6270;font-size:0.92rem;line-height:1.7;max-width:72ch}
.feature-item .tags{display:flex;flex-wrap:wrap;gap:4px;margin-top:10px}
.feature-item .tags span{
  font-size:0.7rem;padding:2px 8px;border-radius:2px;
  background:#f0f4fe;color:#1a56db
}

/* ===== Use Cases ===== */
.use-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:#e5e9f0;border-radius:2px;overflow:hidden;margin-top:32px}
.use-card{background:#fff;padding:28px 24px}
.use-card h4{font-size:0.95rem;margin-bottom:6px}
.use-card p{color:#5a6270;font-size:0.82rem;line-height:1.6}

/* ===== Architecture ===== */
.arch-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:#e5e9f0;border-radius:2px;overflow:hidden;margin-top:32px}
.arch-card{background:#fff;padding:32px 28px}
.arch-card h3{
  font-size:0.95rem;margin-bottom:8px;
  display:flex;align-items:center;gap:8px
}
.arch-card .badge{
  font-size:0.62rem;font-weight:500;padding:2px 6px;
  background:#eef3fc;color:#1a56db;border-radius:2px
}
.arch-card p{color:#5a6270;font-size:0.82rem;line-height:1.6;margin-bottom:12px}
.arch-card .detail{font-size:0.75rem;color:#8895a8;border-top:1px solid #f0f1f3;padding-top:10px}

/* ===== Specs ===== */
.specs-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:#e5e9f0;border-radius:2px;overflow:hidden;margin-top:32px}
.spec-item{display:flex;justify-content:space-between;align-items:center;padding:14px 20px;background:#fff;font-size:0.85rem}
.spec-item .label{color:#5a6270}
.spec-item .value{color:#1a1f26;font-weight:500;text-align:right}

/* ===== CTA ===== */
.cta-section{background:#f6f7f9;padding:80px 0;text-align:center;border-top:1px solid #e5e9f0}
.cta-section h2{margin-bottom:0.5rem}
.cta-section p{color:#5a6270;max-width:48ch;margin:0 auto 1.5rem;font-size:0.92rem}
.cta-actions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}

/* ===== Footer ===== */
.footer{padding:48px 0 24px;color:#8895a8;font-size:0.8rem;border-top:1px solid #e5e9f0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:28px}
.footer h4{color:#1a1f26;font-size:0.85rem;margin-bottom:10px;font-weight:600}
.footer p{color:#8895a8;font-size:0.8rem;line-height:1.6;max-width:36ch}
.footer-links li{margin-bottom:5px}
.footer-links a{color:#8895a8;transition:color 0.15s;font-size:0.8rem}
.footer-links a:hover{color:#1a56db}
.footer-bottom{border-top:1px solid #e5e9f0;padding-top:16px;display:flex;justify-content:space-between;align-items:center;font-size:0.75rem;color:#b0b6c4}

/* ===== Page header ===== */
.page-header{padding-top:96px}
.page-header .container{padding-top:28px;padding-bottom:28px;border-bottom:1px solid #e5e9f0}
.page-header h1{font-size:clamp(1.5rem,3vw,2.2rem);margin-bottom:4px}
.page-header p{color:#5a6270;font-size:0.92rem}

/* ===== Breadcrumb ===== */
.breadcrumb{display:flex;align-items:center;gap:6px;font-size:0.78rem;color:#8895a8;margin-bottom:12px;flex-wrap:wrap}
.breadcrumb a{color:#8895a8;transition:color 0.15s}
.breadcrumb a:hover{color:#1a56db}
.breadcrumb .sep{color:#d0d5dd}

/* ===== Back to top ===== */
.back-top{display:inline-flex;align-items:center;gap:4px;font-size:0.78rem;color:#8895a8;transition:color 0.15s;margin-top:28px}
.back-top:hover{color:#1a56db}

/* ===== Responsive ===== */
@media(max-width:960px){
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-visual{order:-1}
  .intro-grid{grid-template-columns:1fr;gap:32px}
  .arch-grid{grid-template-columns:1fr}
  .use-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:720px){
  .use-grid{grid-template-columns:1fr}
  .specs-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:20px}
  .section{padding:48px 0}
  .hero{padding:96px 0 48px}
  .nav-links{
    display:none;position:absolute;top:64px;left:0;right:0;
    background:#fff;flex-direction:column;padding:16px 28px;gap:16px;
    border-bottom:1px solid #e5e9f0;box-shadow:0 4px 12px rgba(0,0,0,0.04)
  }
  .nav-links.open{display:flex}
  .nav-toggle{display:block}
  .cta-section{padding:48px 0}
  .footer-bottom{flex-direction:column;gap:6px;text-align:center}
}
@media(max-width:480px){
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr}
}

/* ===== Premium/Licensed Features ===== */
.feature-premium{
  border-left:3px solid #1a56db;padding-left:28px;
  margin-top:12px;margin-bottom:12px;
  background:linear-gradient(90deg,#f8faff,transparent)
}
.badge-license{
  display:inline-block;font-size:0.62rem;font-weight:600;
  padding:2px 8px;background:#1a56db;color:#fff;border-radius:2px;
  vertical-align:middle;margin-left:6px;letter-spacing:0.03em
}
.premium-note{
  font-size:0.82rem;color:#1a56db;margin-top:10px;
  padding:8px 12px;background:#eef3fc;border-radius:2px;
  display:inline-block;line-height:1.5
}