/* === AIaaS Design System v3 — B2B Professional === */
:root {
  --color-bg: #FAFBFC;
  --color-bg-alt: #F3F4F6;
  --color-surface: #FFFFFF;
  --color-surface-hover: #F9FAFB;
  --color-text: #111827;
  --color-text-secondary: #6B7280;
  --color-text-tertiary: #9CA3AF;
  --color-border: #E5E7EB;
  --color-border-hover: #2563EB;
  --color-accent: #2563EB;
  --color-accent-light: #60A5FA;
  --color-accent-cyan: #06B6D4;
  --color-accent-blue: #3B82F6;
  --gradient-primary: linear-gradient(135deg, #2563EB, #3B82F6);
  --gradient-subtle: linear-gradient(135deg, #EFF6FF, #DBEAFE);
  --gradient-hero: linear-gradient(180deg, #FAFBFC 0%, #EFF6FF 100%);
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.08);
  --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
  --radius-sm: 10px;
  --radius: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --max-width: 1200px;
  --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
}

/* === Tech Stack Tags === */
.stack-bar{display:flex;flex-wrap:wrap;gap:0.5rem;margin-top:1.5rem}
.stack-tag{
  display:inline-flex;align-items:center;gap:0.375rem;
  padding:0.35rem 0.75rem;
  background:var(--color-surface);
  border:1px solid var(--color-border);
  border-radius:6px;
  font-family:var(--font-mono);
  font-size:0.8125rem;
  color:var(--color-text-secondary);
  transition:all var(--transition);
}
.stack-tag:hover{border-color:var(--color-accent);color:var(--color-accent)}
.stack-tag .dot-icon{
  width:7px;height:7px;
  border-radius:50%;
  flex-shrink:0;
}
.stack-tag .dot-icon.indigo{background:#2563EB}
.stack-tag .dot-icon.blue{background:#3B82F6}
.stack-tag .dot-icon.green{background:#10B981}
.stack-tag .dot-icon.amber{background:#F59E0B}
.stack-tag .dot-icon.cyan{background:#06B6D4}

/* === Terminal Block === */
.terminal-block{
  background:#1E1E2E;
  border:1px solid #2D2D44;
  border-radius:var(--radius);
  overflow:hidden;
  font-family:var(--font-mono);
  font-size:0.8125rem;
  line-height:1.7;
  text-align:left;
  box-shadow:var(--shadow-lg);
}
.terminal-block .term-header{
  display:flex;align-items:center;gap:0.5rem;
  padding:0.5rem 0.875rem;
  background:#16162A;
  border-bottom:1px solid #2D2D44;
}
.terminal-block .term-dot{width:10px;height:10px;border-radius:50%}
.terminal-block .term-dot.r{background:#FF5F57}
.terminal-block .term-dot.y{background:#FFBD2E}
.terminal-block .term-dot.g{background:#27C93F}
.terminal-block .term-title{
  margin-left:0.5rem;
  font-size:0.6875rem;
  color:#6C7086;
  letter-spacing:0.03em;
}
.terminal-block .term-body{
  padding:0.875rem;
  color:#CDD6F4;
}
.terminal-block .term-body .prompt{color:#89B4FA}
.terminal-block .term-body .cmd{color:#A6E3A1}
.terminal-block .term-body .out{color:#F9E2AF}
.terminal-block .term-body .dim{color:#6C7086}
.terminal-block .term-cursor{
  display:inline-block;
  width:7px;height:14px;
  background:#89B4FA;
  margin-left:2px;
  vertical-align:text-bottom;
  animation:term-blink 1s step-end infinite;
}
@keyframes term-blink{0%,100%{opacity:1}50%{opacity:0}}

/* === Tech Specs Row === */
.tech-specs{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1rem;
  margin-top:2rem;
}
.tech-spec{
  text-align:center;
  padding:1.5rem 1rem;
  background:var(--color-surface);
  border:1px solid var(--color-border);
  border-radius:var(--radius-sm);
  box-shadow:var(--shadow-sm);
  transition:all var(--transition);
}
.tech-spec:hover{border-color:var(--color-accent);box-shadow:var(--shadow-md)}
.tech-spec .spec-value{
  font-family:var(--font-mono);
  font-size:1.75rem;
  font-weight:700;
  color:var(--color-accent);
  margin-bottom:0.25rem;
  letter-spacing:-0.02em;
}
.tech-spec .spec-label{
  font-size:0.8125rem;
  color:var(--color-text-tertiary);
}

/* === Architecture Diagram (ASCII-style) === */
.arch-diagram{
  background:var(--color-surface);
  border:1px solid var(--color-border);
  border-radius:var(--radius);
  padding:1.5rem;
  font-family:var(--font-mono);
  font-size:0.75rem;
  line-height:1.5;
  color:var(--color-text-secondary);
  box-shadow:var(--shadow-sm);
  text-align:left;
  overflow-x:auto;
  white-space:pre;
}
.arch-diagram .hl{color:var(--color-accent);font-weight:600}

/* === Canvas Background — subtle === */
#ai-bg{position:fixed;top:0;left:0;width:100%;height:100%;z-index:0;pointer-events:none;opacity:0.35}

/* === Reset === */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.7;
  color:var(--color-text);
  background:var(--color-bg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  position:relative;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
button{cursor:pointer;border:none;background:none;font:inherit;color:inherit}
input,textarea,select{font:inherit;color:inherit}

/* === Main content wrapper — sits above bg === */
main{position:relative;z-index:1}

/* === Typography === */
h1{font-size:clamp(2.25rem,5.5vw,3.5rem);font-weight:700;line-height:1.15;letter-spacing:-0.03em}
h2{font-size:clamp(1.625rem,4vw,2.5rem);font-weight:700;line-height:1.25;letter-spacing:-0.02em}
h3{font-size:1.25rem;font-weight:600;line-height:1.4}
p{color:var(--color-text-secondary)}
.section-label{
  display:inline-flex;
  align-items:center;
  gap:0.5rem;
  font-size:0.8125rem;
  font-weight:600;
  letter-spacing:0.06em;
  text-transform:uppercase;
  color:var(--color-accent);
  margin-bottom:0.75rem;
}
.section-label::before{
  content:'';
  width:6px;height:6px;
  border-radius:50%;
  background:var(--color-accent);
}
.gradient-text{
  background:var(--gradient-primary);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}

/* === Scroll Reveal === */
.reveal{opacity:0;transform:translateY(24px);transition:opacity 0.6s ease,transform 0.6s ease}
.reveal.visible{opacity:1;transform:translateY(0)}

/* === Layout === */
.container{max-width:var(--max-width);margin:0 auto;padding:0 1.5rem;position:relative;z-index:1}
.section{padding:5.5rem 0}
.section-header{text-align:center;margin-bottom:3.5rem}
.section-header h2{margin-bottom:0.75rem}
.section-header p{max-width:600px;margin:0 auto;font-size:1.1rem}

/* === Header — Dark === */
.header{
  position:sticky;
  top:0;
  z-index:100;
  background:var(--color-accent);
  box-shadow:0 1px 4px rgba(0,0,0,0.1);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:68px;
}
.logo{
  display:flex;
  align-items:center;
  gap:0.5rem;
  color:#FFFFFF;
  font-size:1.25rem;
  font-weight:700;
  letter-spacing:-0.01em;
}
.logo-img{
  display:block;
  width:36px;height:36px;
  border-radius:6px;
  flex-shrink:0;
}
.nav .logo-badge{
  position:absolute;
  top:-4px;
  right:-14px;
  font-size:0.5rem;
  font-weight:800;
  letter-spacing:0.03em;
  padding:1px 5px;
  border-radius:2px;
  color:rgba(255,255,255,0.6);
  white-space:nowrap;
}
.nav{display:flex;gap:2.25rem}
.nav a{
  font-size:0.9375rem;
  color:rgba(255,255,255,0.75);
  transition:color var(--transition);
  position:relative;
  display:inline-flex;
  align-items:center;
  overflow:visible;
}
.nav a:hover{color:#FFFFFF}
.nav a.active{color:#FFFFFF}
.nav a::after{
  content:'';
  position:absolute;
  bottom:-4px;left:0;
  width:0;height:2px;
  background:rgba(255,255,255,0.5);
  border-radius:1px;
  transition:width var(--transition);
}
.nav a:hover::after,.nav a.active::after{width:100%}
.nav a.active::after{background:#FFFFFF}
.menu-toggle{display:none;flex-direction:column;gap:5px;padding:4px;z-index:101}
.menu-toggle span{display:block;width:24px;height:2px;background:#FFFFFF;border-radius:1px;transition:var(--transition)}

/* === Hero === */
.hero{
  padding:6rem 0 4rem;
  text-align:center;
  position:relative;
  background:var(--gradient-hero);
}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:0.5rem;
  padding:0.375rem 1rem;
  background:var(--color-surface);
  border:1px solid var(--color-border);
  color:var(--color-text-secondary);
  border-radius:50px;
  font-size:0.875rem;
  font-weight:500;
  margin-bottom:1.75rem;
  position:relative;
  z-index:1;
  box-shadow:var(--shadow-sm);
}
.hero-badge .dot{
  width:6px;height:6px;
  border-radius:50%;
  background:var(--color-accent);
}
.hero h1{position:relative;z-index:1;margin-bottom:1.5rem}
.hero h1 .highlight{
  background:var(--gradient-primary);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}
.hero p{
  font-size:1.15rem;
  max-width:600px;
  margin:0 auto 2.5rem;
  position:relative;
  z-index:1;
}
.hero-cta{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap;position:relative;z-index:1}
.hero-code{
  margin-top:3rem;
  position:relative;
  z-index:1;
  max-width:680px;
  margin-left:auto;
  margin-right:auto;
  background:var(--color-surface);
  border:1px solid var(--color-border);
  border-radius:var(--radius);
  overflow:hidden;
  text-align:left;
  font-family:var(--font-mono);
  font-size:0.8125rem;
  box-shadow:var(--shadow-md);
}
.hero-code .code-header{
  display:flex;
  align-items:center;
  gap:0.5rem;
  padding:0.625rem 1rem;
  background:var(--color-bg-alt);
  border-bottom:1px solid var(--color-border);
}
.hero-code .code-dot{
  width:10px;height:10px;
  border-radius:50%;
}
.hero-code .code-dot.r{background:#FF5F57}
.hero-code .code-dot.y{background:#FFBD2E}
.hero-code .code-dot.g{background:#27C93F}
.hero-code .code-title{
  margin-left:0.5rem;
  font-size:0.75rem;
  color:var(--color-text-tertiary);
}
.hero-code .code-body{padding:1rem;line-height:1.8}
.hero-code .code-body .k{color:#2563EB}
.hero-code .code-body .s{color:#059669}
.hero-code .code-body .n{color:#2563EB}
.hero-code .code-body .c{color:#9CA3AF}
.hero-code .code-body .cursor{
  display:inline-block;
  width:8px;height:16px;
  background:var(--color-accent);
  margin-left:2px;
  animation:blink 1s step-end infinite;
  vertical-align:text-bottom;
}
@keyframes blink{0%,100%{opacity:1}50%{opacity:0}}

/* === Buttons === */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:0.5rem;
  padding:0.75rem 1.75rem;
  font-size:0.9375rem;
  font-weight:600;
  border-radius:var(--radius-sm);
  transition:all var(--transition);
  white-space:nowrap;
  position:relative;
}
.btn-primary{
  background:var(--gradient-primary);
  color:#fff;
  box-shadow:0 2px 8px rgba(37,99,235,0.3);
}
.btn-primary:hover{box-shadow:0 4px 16px rgba(37,99,235,0.4);transform:translateY(-1px)}
.btn-outline{
  border:1.5px solid var(--color-border);
  background:var(--color-surface);
  color:var(--color-text);
}
.btn-outline:hover{border-color:var(--color-accent);color:var(--color-accent)}
.btn-lg{padding:1rem 2.5rem;font-size:1rem;border-radius:var(--radius)}
.btn-sm{padding:0.5rem 1.25rem;font-size:0.875rem}

/* === Cards — Clean white === */
.card{
  background:var(--color-surface);
  border:1px solid var(--color-border);
  border-radius:var(--radius);
  padding:2rem;
  transition:all var(--transition);
  position:relative;
  box-shadow:var(--shadow-sm);
}
.card:hover{
  border-color:var(--color-border-hover);
  box-shadow:var(--shadow-lg);
  transform:translateY(-2px);
}

/* === Service Grid === */
.service-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem}
.service-card{position:relative;overflow:hidden}
.service-icon{
  width:52px;height:52px;
  display:flex;align-items:center;justify-content:center;
  border-radius:var(--radius-sm);
  font-size:1.25rem;
  margin-bottom:1.25rem;
}
.service-icon.blue{background:#EFF6FF;color:#3B82F6}
.service-icon.green{background:#ECFDF5;color:#10B981}
.service-icon.indigo{background:#EFF6FF;color:#2563EB}
.service-icon.amber{background:#FFFBEB;color:#F59E0B}
.service-card h3{margin-bottom:0.5rem}
.service-card p{font-size:0.9375rem;margin-bottom:1rem}
.service-card .arrow{
  font-size:0.875rem;font-weight:500;
  color:var(--color-accent);
  display:inline-flex;align-items:center;gap:0.25rem;
  transition:gap var(--transition);
}
.service-card:hover .arrow{gap:0.5rem}

/* === Page Hero (inner pages) === */
.page-hero{padding:5rem 0 3.5rem;text-align:center;position:relative;background:var(--gradient-hero)}
.page-hero .section-label{margin-bottom:1rem}
.page-hero h1{margin-bottom:1rem}
.page-hero p{max-width:600px;margin:0 auto;font-size:1.1rem}

/* === Content Sections === */
.content-section{padding:4.5rem 0}
.content-section.alt{background:var(--color-bg-alt)}
.content-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:4rem;align-items:center}
.content-grid.reverse{direction:rtl}
.content-grid.reverse>*{direction:ltr}
.content-text h2{margin-bottom:1rem}
.content-text p{margin-bottom:1rem}
.content-list{margin-top:1.5rem}
.content-list li{
  margin-bottom:0.75rem;
  padding-left:1.5rem;
  position:relative;
  color:var(--color-text-secondary);
  font-size:0.9375rem;
}
.content-list li::before{
  content:'';
  position:absolute;
  left:0;top:0.55em;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--color-accent);
}

/* === Process Steps === */
.process-steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1rem;
  margin-top:2rem;
}
.process-step{text-align:center;position:relative}
.process-step .step-num{
  width:48px;height:48px;
  display:flex;align-items:center;justify-content:center;
  margin:0 auto 0.75rem;
  background:var(--gradient-primary);
  color:#fff;
  border-radius:50%;
  font-weight:700;
  font-size:1rem;
  box-shadow:0 2px 8px rgba(37,99,235,0.25);
}
.process-step .step-line{
  position:absolute;
  top:24px;right:-50%;
  width:100%;height:1px;
  background:linear-gradient(90deg,var(--color-border),transparent);
  z-index:-1;
}
.process-step:last-child .step-line{display:none}
.process-step h4{font-size:0.9375rem;margin-bottom:0.25rem;color:var(--color-text)}
.process-step p{font-size:0.8125rem}

/* === Portfolio Grid === */
.portfolio-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem}
.portfolio-card{overflow:hidden}
.portfolio-card .card-image{
  height:220px;
  background:var(--gradient-subtle);
  display:flex;align-items:center;justify-content:center;
  border-radius:var(--radius) var(--radius) 0 0;
  color:var(--color-text-tertiary);
  font-size:1.5rem;
  position:relative;
  overflow:hidden;
}
.portfolio-card .card-body{padding:1.5rem}
.portfolio-card .tags{display:flex;gap:0.5rem;flex-wrap:wrap;margin-top:0.75rem}
.portfolio-card .card-link{
  display:inline-block;margin-top:0.75rem;
  font-size:0.8125rem;color:var(--color-accent);
  font-weight:500;text-decoration:none;
}
.portfolio-card .card-link:hover{text-decoration:underline}
.tag{
  display:inline-block;
  padding:0.25rem 0.75rem;
  background:var(--color-bg-alt);
  border:1px solid var(--color-border);
  border-radius:50px;
  font-size:0.8125rem;
  color:var(--color-text-secondary);
}

/* === Portfolio Filter === */
.portfolio-filter{
  display:flex;gap:0.5rem;flex-wrap:wrap;
  margin-bottom:1.5rem;justify-content:center;
}
.filter-btn{
  padding:0.4rem 1rem;
  border:1px solid var(--color-border);
  border-radius:50px;
  background:#fff;
  font-size:0.8125rem;
  color:var(--color-text-secondary);
  cursor:pointer;
  transition:all 0.2s;
  font-family:inherit;
}
.filter-btn:hover{color:var(--color-accent);border-color:var(--color-accent)}
.filter-btn.active{
  background:var(--gradient-primary);
  color:#fff;
  border-color:transparent;
}

/* === Portfolio Card Previews === */
.portfolio-card .card-image{
  height:220px;
  background:var(--gradient-subtle);
  display:flex;align-items:center;justify-content:center;
  border-radius:var(--radius) var(--radius) 0 0;
  overflow:hidden;
  padding:20px;
  box-sizing:border-box;
}
.portfolio-card.hidden{display:none}

.mini-browser{
  background:#fff;
  border-radius:8px;
  box-shadow:0 6px 24px rgba(0,0,0,0.1);
  width:92%;max-width:240px;
  overflow:hidden;
}
.mini-browser-bar{
  background:#F1F5F9;
  padding:6px 10px;
  display:flex;gap:5px;align-items:center;
}
.mb-dot{width:7px;height:7px;border-radius:50%}
.mb-dot.r{background:#EF4444}.mb-dot.y{background:#F59E0B}.mb-dot.g{background:#22C55E}
.mb-url{margin-left:10px;background:#E2E8F0;border-radius:3px;height:11px;width:55%}
.mini-browser-body{padding:12px}

.mini-phone{
  background:#1C1C1E;
  border-radius:14px;
  padding:7px 4px;
  box-shadow:0 8px 28px rgba(0,0,0,0.18);
  width:62px;
}
.mini-phone-screen{
  background:#fff;
  border-radius:10px;
  padding:10px 7px;
  min-height:96px;
  display:flex;flex-direction:column;gap:5px;
}
.mini-phone-notch{
  width:22px;height:3px;
  background:#1C1C1E;
  border-radius:2px;
  margin:0 auto 6px;
}
.mp-row{
  height:5px;border-radius:3px;background:#E2E8F0;
}
.mp-row.w60{width:60%}.mp-row.w80{width:80%}.mp-row.w40{width:40%}
.mp-icon{
  width:20px;height:20px;border-radius:5px;
  margin:0 auto;
  display:flex;align-items:center;justify-content:center;
  font-size:0.55rem;
}

.mini-dboard{
  background:#fff;
  border-radius:8px;
  box-shadow:0 6px 24px rgba(0,0,0,0.1);
  width:92%;max-width:240px;
  overflow:hidden;
}
.mini-dboard-head{
  background:#1E293B;
  color:#fff;
  padding:8px 12px;
  font-size:0.55rem;font-weight:600;
  display:flex;align-items:center;justify-content:space-between;
}
.mini-dboard-body{padding:12px}
.md-stat-row{display:flex;gap:6px;margin-bottom:8px}
.md-stat{
  flex:1;background:#F8FAFC;
  border-radius:6px;padding:6px 8px;text-align:center;
}
.md-stat-num{font-size:0.75rem;font-weight:700;color:#1E293B}
.md-stat-label{font-size:0.45rem;color:#94A3B8;margin-top:2px}
.md-item{
  display:flex;align-items:center;justify-content:space-between;
  padding:5px 8px;background:#F8FAFC;
  border-radius:4px;margin-bottom:3px;
}
.md-item-name{font-size:0.5rem;color:#334155}
.md-item-status{font-size:0.45rem;color:#64748B}

/* === Pricing === */
.pricing-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem}
.pricing-card{text-align:center;padding:2.5rem 2rem}
.pricing-card.featured{
  border-color:var(--color-accent);
  position:relative;
}
.pricing-card.featured::before{
  content:'推荐';
  position:absolute;
  top:12px;right:12px;
  padding:0.25rem 0.75rem;
  background:var(--gradient-primary);
  color:#fff;
  border-radius:50px;
  font-size:0.75rem;
  font-weight:600;
}
.pricing-card h3{font-size:1.15rem}
.price{
  font-size:2.75rem;
  font-weight:700;
  margin:1rem 0 0.5rem;
  background:var(--gradient-primary);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}
.price span{font-size:1rem;font-weight:400;color:var(--color-text-secondary)}
.pricing-card .features{margin:1.5rem 0;text-align:left}
.pricing-card .features li{
  padding:0.5rem 0;
  color:var(--color-text-secondary);
  font-size:0.9375rem;
  border-bottom:1px solid var(--color-border);
}
.pricing-card .features li:last-child{border-bottom:none}

/* === Feature Grid === */
.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem}
.feature-item{
  display:flex;
  gap:1rem;
  padding:1.5rem;
  background:var(--color-surface);
  border:1px solid var(--color-border);
  border-radius:var(--radius-sm);
  transition:all var(--transition);
  box-shadow:var(--shadow-sm);
}
.feature-item:hover{border-color:var(--color-border-hover);box-shadow:var(--shadow-md)}
.feature-item .feature-icon{
  width:24px;height:24px;
  flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  color:var(--color-accent);
  margin-top:2px;
}
.feature-item h4{font-size:0.9375rem;margin-bottom:0.25rem;color:var(--color-text)}
.feature-item p{font-size:0.875rem}

/* === Blog === */
.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}
.blog-card .card-body{padding:1.5rem}
.blog-card .card-date{font-size:0.8125rem;color:var(--color-text-tertiary);margin-bottom:0.5rem}
.blog-card h3{font-size:1.1rem;margin-bottom:0.5rem}
.blog-card p{font-size:0.9375rem}

/* === Contact === */
.contact-grid{display:grid;grid-template-columns:1fr 1.5fr;gap:3rem}
.contact-info h3{margin-bottom:0.75rem;color:var(--color-text)}
.contact-info p{margin-bottom:2rem}
.contact-methods{display:flex;flex-direction:column;gap:1rem}
.contact-method{
  display:flex;
  align-items:center;
  gap:0.75rem;
  padding:1rem 1.25rem;
  background:var(--color-surface);
  border:1px solid var(--color-border);
  border-radius:var(--radius-sm);
  box-shadow:var(--shadow-sm);
}
.contact-method .icon{
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  background:var(--gradient-subtle);
  border-radius:var(--radius-sm);
  color:var(--color-accent);
  font-size:1rem;
}
.contact-method span{color:var(--color-text-secondary);font-size:0.9375rem}
.form-group{margin-bottom:1.25rem}
.form-group label{display:block;margin-bottom:0.5rem;font-size:0.9375rem;font-weight:500;color:var(--color-text)}
.form-group input,
.form-group select,
.form-group textarea{
  width:100%;
  padding:0.75rem 1rem;
  border:1px solid var(--color-border);
  border-radius:var(--radius-sm);
  background:var(--color-surface);
  color:var(--color-text);
  font-size:0.9375rem;
  transition:all var(--transition);
  outline:none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus{
  border-color:var(--color-accent);
  box-shadow:0 0 0 3px rgba(37,99,235,0.1);
}
.form-group textarea{resize:vertical;min-height:120px}
.form-group input::placeholder,
.form-group textarea::placeholder{color:var(--color-text-tertiary)}

/* === Smart Contact Wizard === */
.wizard-container{max-width:800px;margin:0 auto}
.wizard-progress{display:flex;justify-content:center;align-items:center;gap:0;margin-bottom:3rem;position:relative}
.wizard-progress::before{content:'';position:absolute;top:50%;left:15%;right:15%;height:2px;background:var(--color-border);transform:translateY(-50%);z-index:0}
.wizard-step{display:flex;flex-direction:column;align-items:center;gap:0.5rem;position:relative;z-index:1;flex:1}
.wizard-dot{width:40px;height:40px;border-radius:50%;background:var(--color-surface);border:2px solid var(--color-border);display:flex;align-items:center;justify-content:center;font-size:0.875rem;font-weight:600;color:var(--color-text-tertiary);transition:all 0.4s ease}
.wizard-step.active .wizard-dot{background:var(--color-accent);border-color:var(--color-accent);color:#fff;box-shadow:0 0 0 6px rgba(37,99,235,0.12)}
.wizard-step.done .wizard-dot{background:#22C55E;border-color:#22C55E;color:#fff}
.wizard-label{font-size:0.75rem;color:var(--color-text-tertiary);text-align:center;font-weight:500;transition:color 0.3s}
.wizard-step.active .wizard-label{color:var(--color-accent);font-weight:600}
.wizard-step.done .wizard-label{color:#22C55E}
.wizard-panel{display:none;animation:fadeSlideIn 0.4s ease}
.wizard-panel.active{display:block}
@keyframes fadeSlideIn{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}

/* Step 1 — Service Cards */
.service-choice-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem;max-width:600px;margin:0 auto}
.service-choice-card{border:2px solid var(--color-border);border-radius:var(--radius);padding:1.5rem;cursor:pointer;background:var(--color-surface);transition:all 0.25s ease;text-align:center;position:relative;overflow:hidden}
.service-choice-card:hover{border-color:var(--color-accent);box-shadow:var(--shadow-md);transform:translateY(-2px)}
.service-choice-card.selected{border-color:var(--color-accent);background:linear-gradient(135deg,rgba(37,99,235,0.04),rgba(99,102,241,0.02));box-shadow:0 0 0 3px rgba(37,99,235,0.1)}
.service-choice-card.selected::after{content:'✓';position:absolute;top:10px;right:14px;width:22px;height:22px;border-radius:50%;background:var(--color-accent);color:#fff;font-size:0.7rem;display:flex;align-items:center;justify-content:center;font-weight:700}
.sc-icon{font-size:2rem;margin-bottom:0.5rem}
.sc-title{font-weight:600;font-size:0.9375rem;margin-bottom:0.25rem;color:var(--color-text)}
.sc-desc{font-size:0.8rem;color:var(--color-text-secondary);line-height:1.4}

/* Step 2 — Scenario */
.scenario-group{margin-bottom:1.5rem}
.scenario-group h4{font-size:0.875rem;font-weight:600;margin-bottom:0.75rem;color:var(--color-text)}
.scenario-chips{display:flex;flex-wrap:wrap;gap:0.5rem}
.scenario-chip{padding:0.5rem 1rem;border:1px solid var(--color-border);border-radius:50px;font-size:0.8125rem;cursor:pointer;background:var(--color-surface);color:var(--color-text-secondary);transition:all 0.2s;user-select:none}
.scenario-chip:hover{border-color:var(--color-accent);color:var(--color-accent)}
.scenario-chip.selected{background:var(--color-accent);color:#fff;border-color:var(--color-accent)}
.matched-case{margin-top:1.5rem;padding:1.25rem;border-radius:var(--radius);background:linear-gradient(135deg,rgba(37,99,235,0.04),rgba(139,92,246,0.02));border:1px dashed rgba(37,99,235,0.2);display:none}
.matched-case.show{display:block;animation:fadeSlideIn 0.4s ease}
.matched-case h5{font-size:0.8125rem;color:var(--color-accent);margin-bottom:0.5rem}
.matched-case p{font-size:0.875rem;color:var(--color-text-secondary);margin-bottom:0.5rem}
.matched-case .case-link{font-size:0.8125rem;color:var(--color-accent);text-decoration:none;font-weight:500}
.matched-case .case-link:hover{text-decoration:underline}

/* Step 3 — Quick Form */
.step3-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.step3-grid .form-group.full{grid-column:1/-1}
.pulse-btn{position:relative;overflow:hidden}
.pulse-btn::after{content:'';position:absolute;inset:0;background:rgba(255,255,255,0.2);transform:scaleX(0);transform-origin:left;animation:pulse 2s ease infinite}
@keyframes pulse{0%,100%{transform:scaleX(0)}50%{transform:scaleX(1)}}

/* AI FAQ Quick Answers */
.faq-quick{display:flex;flex-direction:column;gap:0.5rem;margin-top:1.5rem}
.faq-quick-btn{padding:0.65rem 1rem;border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-surface);text-align:left;font-size:0.8125rem;color:var(--color-text-secondary);cursor:pointer;transition:all 0.2s}
.faq-quick-btn:hover{border-color:var(--color-accent);color:var(--color-accent)}
.faq-quick-btn:last-child{margin-bottom:0}
.faq-answer{margin-top:0.5rem;padding:0.75rem 1rem;background:linear-gradient(135deg,rgba(37,99,235,0.04),rgba(99,102,241,0.02));border-radius:var(--radius-sm);font-size:0.8125rem;color:var(--color-text-secondary);line-height:1.6;display:none}
.faq-answer.show{display:block;animation:fadeSlideIn 0.3s ease}

/* Contact Sidebar */
.contact-sidebar{border-left:1px solid var(--color-border);padding-left:2rem}
.contact-sidebar h4{font-size:0.9375rem;margin-bottom:1rem;color:var(--color-text)}
.qr-box{text-align:center;flex:1;min-width:130px}
.qr-box img{display:block;margin:0 auto}
.qr-box p{font-size:0.8125rem;color:var(--color-text-secondary);margin-top:0.5rem}
.qr-box p strong{color:var(--color-text)}
.social-proof{display:flex;flex-direction:column;gap:0.75rem}
.sp-item{display:flex;align-items:center;gap:0.75rem;padding:0.75rem;background:var(--color-surface);border-radius:var(--radius-sm);border:1px solid var(--color-border)}
.sp-icon{width:36px;height:36px;border-radius:50%;background:var(--gradient-subtle);display:flex;align-items:center;justify-content:center;font-size:0.875rem;color:var(--color-accent);flex-shrink:0}
.sp-text{font-size:0.8125rem;color:var(--color-text-secondary)}
.sp-text strong{color:var(--color-accent)}

.wizard-nav{display:flex;justify-content:space-between;align-items:center;margin-top:2rem;padding-top:1.5rem;border-top:1px solid var(--color-border)}
.wizard-nav button{min-width:100px}

@media (max-width:768px){
  .service-choice-grid{grid-template-columns:1fr}
  .step3-grid{grid-template-columns:1fr}
  .contact-sidebar{border-left:none;border-top:1px solid var(--color-border);padding-left:0;padding-top:2rem;margin-top:2rem}
}

/* === CTA Section === */
/* === Browser Frame Demo === */
.browser-frame{
  border-radius:10px;
  overflow:hidden;
  box-shadow:0 8px 32px rgba(0,0,0,0.12);
  background:#FFFFFF;
}
.browser-chrome{
  display:flex;
  align-items:center;
  gap:0.75rem;
  padding:0.625rem 1rem;
  background:#E2E8F0;
  border-bottom:1px solid #CBD5E1;
}
.browser-dots{display:flex;gap:6px;flex-shrink:0}
.browser-dots span{
  width:10px;height:10px;
  border-radius:50%;
}
.browser-dots span:nth-child(1){background:#EF4444}
.browser-dots span:nth-child(2){background:#F59E0B}
.browser-dots span:nth-child(3){background:#22C55E}
.browser-url{
  flex:1;
  background:#FFFFFF;
  border-radius:5px;
  padding:0.25rem 0.75rem;
  font-size:0.75rem;
  color:#94A3B8;
  text-align:center;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.browser-body{
  position:relative;
  max-height:420px;
  overflow:hidden;
}
.browser-body iframe{
  width:100%;
  height:420px;
  border:none;
  display:block;
}

/* Device shells — unified Space Black */
.device-macbook{
  background:linear-gradient(180deg,#2A2A2E 0%,#1C1C1E 60%,#1A1A1E 100%);
  border-radius:14px;
  padding:12px 16px 14px;
  box-shadow:0 12px 48px rgba(0,0,0,0.25);
  position:relative;
}
.device-macbook::before{
  content:'';
  position:absolute;
  top:6px;left:50%;
  transform:translateX(-50%);
  width:3px;height:3px;
  background:#555;
  border-radius:50%;
}
.device-macbook .browser-frame{
  border-radius:5px;
}

.device-ipad{
  background:linear-gradient(180deg,#2A2A2E 0%,#1C1C1E 60%,#1A1A1E 100%);
  border-radius:18px;
  padding:12px 12px 14px;
  box-shadow:0 10px 40px rgba(0,0,0,0.25);
  position:relative;
}
.device-ipad::before{
  content:'';
  position:absolute;
  top:6px;left:50%;
  transform:translateX(-50%);
  width:3px;height:3px;
  background:#555;
  border-radius:50%;
}
.device-ipad .browser-frame{
  border-radius:3px;
}
/* Mobile phone frame for mini program demo */
/* iPhone-style phone frame (iPhone 15/16 Pro proportions) */
.phone-frame{
  margin:0 auto;
  width:190px;
  max-height:360px;
  border-radius:20px;
  overflow:hidden;
  border:2.5px solid #2A2A2E;
  box-shadow:0 8px 32px rgba(0,0,0,0.25);
  background:#000;
  position:relative;
  display:flex;
  flex-direction:column;
}
.phone-notch{
  height:26px;
  background:#2A2A2E;
  display:flex;
  align-items:center;
  justify-content:center;
  flex-shrink:0;
  position:relative;
}
/* Dynamic Island pill (iPhone 14 Pro+) */
.phone-notch-pill{
  width:52px;height:12px;
  background:#000;
  border-radius:8px;
}
.phone-screen{
  flex:1;
  padding:0.6rem;
  overflow:hidden;
  background:#FFF;
}
.phone-home-bar{
  height:22px;
  background:#2A2A2E;
  display:flex;
  align-items:flex-end;
  justify-content:center;
  flex-shrink:0;
  padding-bottom:6px;
}
.phone-home-indicator{
  width:72px;height:3px;
  background:#475569;
  border-radius:2px;
}
/* Scoped reset for demo internal content */
.demo-scope{font-family:var(--font-sans);color:#1E293B}
.demo-scope *{box-sizing:border-box;margin:0;padding:0}
.demo-scope .demo-hero{
  text-align:center;
  padding:2rem 1.5rem;
  background:linear-gradient(135deg,#EFF6FF 0%,#DBEAFE 100%);
}
.demo-scope .demo-hero h3{font-size:1.1rem;margin-bottom:0.5rem;font-weight:600}
.demo-scope .demo-hero p{font-size:0.8rem;color:#64748B;max-width:400px;margin:0 auto}
.demo-scope .demo-row{
  display:flex;
  gap:0.75rem;
  padding:1.25rem 1rem;
  flex-wrap:wrap;
}
.demo-scope .demo-card{
  flex:1;min-width:120px;
  padding:1rem;
  border-radius:8px;
  background:#F8FAFC;
  border:1px solid #E2E8F0;
  text-align:center;
}
.demo-scope .demo-card .icon{
  width:32px;height:32px;
  margin:0 auto 0.5rem;
  border-radius:8px;
  background:var(--color-accent);
  display:flex;align-items:center;justify-content:center;
  color:#FFF;font-size:0.8rem;font-weight:700;
}
.demo-scope .demo-card h4{font-size:0.8rem;margin-bottom:0.25rem;font-weight:600}
.demo-scope .demo-card p{font-size:0.7rem;color:#64748B;line-height:1.4}
.demo-scope .demo-btn{
  display:inline-block;
  padding:0.5rem 1.5rem;
  border-radius:6px;
  font-size:0.8rem;
  font-weight:600;
  text-decoration:none;
}
.demo-scope .demo-btn-primary{background:var(--color-accent);color:#FFF}
.demo-scope .demo-btn-outline{border:1px solid #CBD5E1;color:#475569}
.demo-scope .bento-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr;
  gap:0.75rem;
  padding:0.75rem 1rem;
}
.demo-scope .bento-item{
  padding:0.75rem;
  border-radius:8px;
  background:#F8FAFC;
  font-size:0.75rem;
}
.demo-scope .bento-main{
  grid-row:span 2;
  background:linear-gradient(135deg,#1E293B,#334155);
  color:#F1F5F9;
  display:flex;flex-direction:column;justify-content:center;
  padding:1rem;
}
.demo-scope .bento-main h4{font-size:0.9rem;margin-bottom:0.25rem;color:#FFF}
.demo-scope .bento-main p{font-size:0.7rem;color:#94A3B8}
.demo-scope .stat{font-size:1.5rem;font-weight:700;color:var(--color-accent)}
.demo-scope .stat-label{font-size:0.65rem;color:#64748B}
.demo-tag{
  display:inline-block;
  padding:2px 8px;
  border-radius:4px;
  font-size:0.65rem;
  font-weight:600;
}
.demo-tag-blue{background:#DBEAFE;color:#1D4ED8}
.demo-tag-green{background:#DCFCE7;color:#16A34A}
.demo-tag-purple{background:#F3E8FF;color:#9333EA}
.demo-tag-orange{background:#FFF7ED;color:#EA580C}
/* Demo section layout */
.demo-section .content-grid{align-items:start}
.demo-section .demo-intro{margin-bottom:2rem}
.demo-section .demo-intro .section-label{display:block;margin-bottom:0.5rem}

/* Multi-device showcase */
.device-showcase{
  display:flex;
  align-items:flex-end;
  gap:2rem;
  justify-content:center;
}
.device-item{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:0.5rem;
}
.device-label{
  font-size:0.65rem;
  font-weight:500;
  color:#999;
  letter-spacing:0.04em;
}
.device-showcase .browser-frame{width:100%;max-width:780px}
.device-showcase .browser-frame.tablet{max-width:500px}
.device-showcase .phone-frame{margin:0;width:190px;max-height:360px}
.device-showcase .device-macbook{max-width:812px}
.device-showcase .device-ipad{max-width:524px}
@media(max-width:900px){
  .device-showcase{gap:1rem}
  .device-showcase .browser-frame.tablet{display:none}
  .device-item:has(.browser-frame.tablet){display:none}
}
@media(max-width:640px){
  .device-showcase{flex-direction:column;align-items:center}
  .device-showcase .browser-frame.tablet{display:none}
  .device-item:has(.browser-frame.tablet){display:none}
  .device-showcase .browser-frame{max-width:100%}
  .device-showcase .device-macbook{max-width:100%}
}

/* Premium brand demo */
.demo-luxury-nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:0.6rem 1.2rem;
  background:#FFF;
  border-bottom:1px solid #EBEBEB;
  font-size:0.45rem;
  color:#999;
  letter-spacing:0.08em;
}
.demo-luxury-nav .nav-center{font-weight:400;color:#111;letter-spacing:0.14em}
.demo-luxury-hero{
  position:relative;
  background:#FFF;
  text-align:center;
  padding:3.5rem 2rem 3rem;
  overflow:hidden;
}
.demo-luxury-hero::before{
  content:'';
  position:absolute;
  top:10%;left:25%;
  width:50%;height:60%;
  background:radial-gradient(ellipse at center,rgba(200,200,200,0.15),transparent 70%);
  pointer-events:none;
}
.demo-luxury-hero::after{
  content:'';
  position:absolute;
  bottom:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,#DDD,transparent);
}
.demo-luxury-hero .luxury-label{
  font-size:0.45rem;
  letter-spacing:0.22em;
  color:#999;
  text-transform:uppercase;
  margin-bottom:1rem;
  position:relative;z-index:1;
}
.demo-luxury-hero .luxury-title{
  font-size:1.6rem;
  font-weight:200;
  letter-spacing:0.16em;
  color:#111;
  margin-bottom:0.3rem;
  position:relative;z-index:1;
}
.demo-luxury-hero .luxury-sub{
  font-size:0.55rem;
  color:#999;
  letter-spacing:0.15em;
  margin-bottom:2rem;
  position:relative;z-index:1;
}
.demo-luxury-hero .luxury-cta{
  display:inline-block;
  padding:0.45rem 2rem;
  border:1px solid #CCC;
  color:#333;
  font-size:0.55rem;
  letter-spacing:0.1em;
  text-decoration:none;
  position:relative;z-index:1;
  transition:all 0.3s;
}
.demo-luxury-collection{
  background:#FAFAFA;
  padding:1.5rem 1.2rem;
}
.demo-luxury-collection .section-title{
  text-align:center;
  font-size:0.55rem;
  letter-spacing:0.22em;
  color:#AAA;
  text-transform:uppercase;
  margin-bottom:1.2rem;
}
.demo-luxury-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:0.6rem;
}
.demo-luxury-item{
  aspect-ratio:4/5;
  position:relative;
  overflow:hidden;
  display:flex;
  flex-direction:column;
  justify-content:flex-end;
  padding:0.7rem;
}
.demo-luxury-item:nth-child(1){background:linear-gradient(180deg,rgba(240,240,240,0) 40%,#F0F0F0 100%),linear-gradient(135deg,#E8E8E8,#F5F5F5)}
.demo-luxury-item:nth-child(2){background:linear-gradient(180deg,rgba(245,245,245,0) 40%,#F3F3F3 100%),linear-gradient(135deg,#EDEDED,#F7F7F7)}
.demo-luxury-item .item-tag{
  font-size:0.4rem;
  letter-spacing:0.15em;
  color:rgba(0,0,0,0.3);
  text-transform:uppercase;
  margin-bottom:0.15rem;
}
.demo-luxury-item .item-name{
  font-size:0.7rem;
  font-weight:300;
  letter-spacing:0.06em;
  color:#111;
}
.demo-luxury-item .item-desc{
  font-size:0.4rem;
  color:#999;
  margin-top:0.15rem;
  letter-spacing:0.03em;
}
.demo-luxury-story{
  background:#FFF;
  text-align:center;
  padding:1.5rem 1.5rem;
  border-top:1px solid #EBEBEB;
}
.demo-luxury-story .story-text{
  font-size:0.5rem;
  color:#999;
  letter-spacing:0.06em;
  line-height:1.8;
  max-width:360px;
  margin:0 auto 0.8rem;
}
.demo-luxury-story .story-stats{
  display:flex;
  justify-content:center;
  gap:2.5rem;
}
.demo-luxury-story .stat-num{
  font-size:0.65rem;
  font-weight:300;
  color:#111;
  letter-spacing:0.04em;
}
.demo-luxury-story .stat-label{
  font-size:0.38rem;
  color:#BBB;
  letter-spacing:0.1em;
  margin-top:0.1rem;
}

.cta-section{
  text-align:center;
  padding:5rem 0;
  background:var(--gradient-subtle);
  border:1px solid var(--color-border);
  border-radius:var(--radius-xl);
  margin:2rem 0;
  position:relative;
  overflow:hidden;
}
.cta-section h2{margin-bottom:1rem}
.cta-section p{margin-bottom:2rem;max-width:500px;margin-left:auto;margin-right:auto}

/* === Footer === */
.footer{
  background:var(--color-bg-alt);
  border-top:1px solid var(--color-border);
  padding:4rem 0 2rem;
  margin-top:5rem;
  position:relative;
  z-index:1;
}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:3rem;margin-bottom:3rem}
.footer-brand h3{color:var(--color-text);font-size:1.25rem;margin-bottom:0.75rem}
.footer-brand-header{display:flex;align-items:center;gap:0.75rem;margin-bottom:0.75rem}
.footer-brand-header h3{margin-bottom:0}
.footer-brand p{font-size:0.9375rem}
.footer-links h4{color:var(--color-text);font-size:0.9375rem;margin-bottom:1rem}
.footer-links a{
  display:block;font-size:0.875rem;margin-bottom:0.5rem;
  color:var(--color-text-tertiary);
  transition:color var(--transition);
}
.footer-links a:hover{color:var(--color-accent)}
.footer-bottom{
  border-top:1px solid var(--color-border);
  padding-top:1.5rem;
  display:flex;justify-content:space-between;align-items:center;
  font-size:0.875rem;
  color:var(--color-text-tertiary);
}

/* === FAQ === */
.faq-list{margin-top:2rem}
.faq-item{
  border:1px solid var(--color-border);
  border-radius:var(--radius);
  margin-bottom:0.75rem;
  overflow:hidden;
  background:var(--color-surface);
  transition:border-color var(--transition);
  box-shadow:var(--shadow-sm);
}
.faq-item:hover{border-color:var(--color-border-hover)}
.faq-q{
  width:100%;
  padding:1.25rem 1.5rem;
  text-align:left;
  font-weight:500;
  font-size:0.9375rem;
  color:var(--color-text);
  display:flex;
  justify-content:space-between;
  align-items:center;
  transition:color var(--transition);
}
.faq-q:hover{color:var(--color-accent)}
.faq-q::after{content:'+';font-size:1.25rem;color:var(--color-text-tertiary);transition:all var(--transition)}
.faq-item.open .faq-q::after{content:'\2212';transform:rotate(180deg)}
.faq-a{
  padding:0 1.5rem 1.25rem;
  font-size:0.9375rem;
  color:var(--color-text-secondary);
  display:none;
}
.faq-item.open .faq-a{display:block}

/* === Breadcrumb === */
.breadcrumb{
  display:flex;
  gap:0.5rem;
  align-items:center;
  font-size:0.875rem;
  color:var(--color-text-tertiary);
  margin-bottom:2rem;
}
.breadcrumb a{color:var(--color-text-secondary);transition:color var(--transition)}
.breadcrumb a:hover{color:var(--color-accent)}
.breadcrumb .sep{color:var(--color-text-tertiary)}

/* === Toast === */
.toast{
  position:fixed;
  bottom:2rem;left:50%;
  transform:translateX(-50%);
  background:var(--color-text);
  color:#fff;
  padding:0.875rem 1.75rem;
  border-radius:var(--radius);
  font-size:0.9375rem;
  font-weight:500;
  z-index:200;
  opacity:0;
  transition:opacity 0.3s ease;
  pointer-events:none;
  box-shadow:var(--shadow-lg);
}
.toast.show{opacity:1}

/* === Responsive === */
@media (max-width:1024px){
  .service-grid{grid-template-columns:1fr 1fr}
  .pricing-grid{grid-template-columns:1fr;max-width:420px;margin:0 auto}
  .blog-grid{grid-template-columns:repeat(2,1fr)}
  .content-grid{grid-template-columns:1fr;gap:2rem}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .hero-code{display:none}
  .tech-specs{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:768px){
  .nav{
    display:none;
    position:fixed;
    top:0;left:0;right:0;bottom:0;
    background:var(--color-accent);
    flex-direction:column;
    align-items:center;
    justify-content:center;
    gap:1.5rem;
    z-index:99;
  }
  .nav.open{display:flex}
  .nav a{font-size:1.25rem}
  .menu-toggle{display:flex}
  .service-grid{grid-template-columns:1fr}
  .portfolio-grid{grid-template-columns:1fr}
  .blog-grid{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:1fr}
  .hero{padding:4rem 0 2.5rem}
  .section{padding:4rem 0}
  .process-steps{grid-template-columns:1fr;max-width:300px;margin:2rem auto 0}
  .process-step .step-line{display:none}
  .footer-bottom{flex-direction:column;gap:0.5rem;text-align:center}
  .tech-specs{grid-template-columns:1fr;max-width:300px;margin-left:auto;margin-right:auto}
}