:root {
  --ink:        #0F0F1A;
  --slate:      #4A4A5E;
  --muted:      #7E7E92;
  --line:       #E8E6F0;
  --bg:         #FAFAFC;
  --white:      #FFFFFF;
  --green:      #1F9D55;
  --red:        #D63B3B;
  /* AI SaaS — sapphire blue + bright yellow-gold for "premium platform tier" feel */
  --sapphire:        #2563EB;
  --sapphire-dark:   #1D4ED8;
  --sapphire-deep:   #1E3A8A;
  --sapphire-50:     #EFF6FF;
  --sapphire-100:    #DBEAFE;
  --gold:            #EAB308;
  --gold-dark:       #CA8A04;
  --gold-light:      #FACC15;
  --gold-50:         #FEFCE8;
  --gold-100:        #FEF9C3;
  /* Tier accents for the 3-card customer-segment comparison */
  --t-smb:        #94A3B8;
  --t-midmarket:  #2563EB;
  --t-enterprise: #EAB308;
  --radius:     14px;
  --shadow-sm:  0 2px 8px rgba(42, 14, 79, 0.06);
  --shadow-md:  0 8px 24px rgba(42, 14, 79, 0.08);
  --shadow-lg:  0 20px 50px rgba(42, 14, 79, 0.12);
}


.hero h1 .accent { color: var(--gold-light); }
.aeo-label { color: var(--gold-light); background: rgba(163, 230, 53, 0.16); }
.aeo-card .fill { background: linear-gradient(180deg, transparent 60%, rgba(245, 158, 11, 0.40) 60%); color: var(--gold-light); }
.fill  { background: linear-gradient(180deg, transparent 60%, rgba(163, 230, 53, 0.45) 60%); color: var(--gold-light);  }
.section-eyebrow { color: var(--sapphire-dark); }
.why-icon { background: var(--indigo-50); }
.why-card:hover {transform: translateY(-4px); border-color: var(--sapphire); }
.comparison thead th.our { background: var(--sapphire); }
.comparison td.our { background: rgba(8, 145, 178, 0.08); border-left: 3px solid var(--sapphire); }
.service-card-content::before { background: var(--sapphire); }
.model-card.highlight .model-num { background: var(--sapphire); }
.model-badge { background: var(--sapphire); }
.model-card.highlight { background: linear-gradient(160deg, var(--sapphire-50) 0%, #FFFFFF 100%);
  border-color: var(--sapphire);  }
.model-card li::before { color: var(--sapphire); }
.stack-card h3 { color: var(--gold-light); }
.stack-card::before { background: radial-gradient(circle, rgba(245, 158, 11, 0.28) 0%, rgba(124, 58, 237, 0.22) 50%, transparent 70%); }
.faq-item[open] { border-color: var(--sapphire); }
.faq-item summary::after { color: var(--sapphire); }
svg { color: var(--sapphire-dark); } 
.aeo-label svg { color: inherit; }
.industry-card-content:last-child .industry-icon svg { color: #ffffff; }
.industry-card-content:hover .industry-icon svg { color: #ffffff; }


/* SIGNATURE SECTION 1: NINE SAAS+AI CONCERNS (3x3 grid) */
.concerns-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.concern-card {
  background: white;
  border-radius: var(--radius);
  padding: 24px 22px;
  border: 1px solid var(--line);
  position: relative;
  overflow: hidden;
  transition: all 0.3s;
  display: flex;
  flex-direction: column;
}
.concern-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 40px; height: 3px;
  background: var(--sapphire);
  border-radius: 0 0 3px 0;
  transition: width 0.3s, background 0.3s;
}
.concern-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--sapphire); }
.concern-card:hover::before { background: var(--gold); width: 60px; }
.concern-icon {
  width: 44px; height: 44px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--sapphire-50) 0%, var(--gold-50) 100%);
  color: var(--sapphire-dark);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  margin-bottom: 14px;
  border: 1px solid var(--sapphire-100);
}
.concern-num {
  position: absolute;
  top: 18px; right: 20px;
  
  font-size: 11px;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.05em;
}
.concern-card h3 { font-size: 15.5px; margin-bottom: 8px; line-height: 1.3; padding-right: 30px; }
.concern-card p { font-size: 13.5px; color: var(--slate); line-height: 1.55; flex-grow: 1; margin-bottom: 14px; }
.concern-tag {  font-size: 11px; font-weight: 500; color: var(--sapphire-dark); background: var(--sapphire-50); border: 1px solid var(--sapphire-100); padding: 6px 10px; border-radius: 6px; line-height: 1.45; }
@media (max-width: 900px) { .concerns-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .concerns-grid { grid-template-columns: 1fr; } }

/* SIGNATURE SECTION 2: THREE CUSTOMER TIERS (3-card) */
.tiers-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.tier-card {
  background: white;
  border-radius: var(--radius);
  padding: 32px 28px;
  border: 1px solid var(--line);
  position: relative;
  overflow: hidden;
  transition: all 0.3s;
  display: flex;
  flex-direction: column;
}
.tier-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 5px;
}
.tier-card.smb::before        { background: linear-gradient(90deg, var(--t-smb) 0%, #CBD5E1 100%); }
.tier-card.midmarket::before  { background: linear-gradient(90deg, var(--t-midmarket) 0%, #60A5FA 100%); }
.tier-card.enterprise::before { background: linear-gradient(90deg, var(--t-enterprise) 0%, var(--gold-light) 100%); }
.tier-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.tier-card.smb:hover        { border-color: var(--t-smb); }
.tier-card.midmarket:hover  { border-color: var(--t-midmarket); }
.tier-card.enterprise:hover { border-color: var(--t-enterprise); }
.tier-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; }
.tier-label {
  
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 4px;
}
.tier-card.smb .tier-label        { background: #F1F5F9; color: #475569; }
.tier-card.midmarket .tier-label  { background: var(--sapphire-50); color: var(--sapphire-dark); }
.tier-card.enterprise .tier-label { background: var(--gold-50); color: var(--gold-dark); }
.tier-dots {
  
  font-size: 14px;
  letter-spacing: 0.1em;
}
.tier-card.smb .tier-dots        { color: var(--t-smb); }
.tier-card.midmarket .tier-dots  { color: var(--t-midmarket); }
.tier-card.enterprise .tier-dots { color: var(--t-enterprise); }
.tier-card h3 { font-size: 22px; margin-bottom: 8px; line-height: 1.2; }
.tier-deployment {  font-size: 12px; color: var(--muted); margin-bottom: 16px; padding-bottom: 16px; border-bottom: 1px dashed var(--line); }
.tier-card p { font-size: 14px; color: var(--slate); line-height: 1.6; flex-grow: 1; margin-bottom: 16px; }
.tier-box { background: var(--bg); border-radius: 8px; padding: 14px 16px; margin-bottom: 10px; border-left: 3px solid; }
.tier-card.smb .tier-box        { border-left-color: var(--t-smb); }
.tier-card.midmarket .tier-box  { border-left-color: var(--t-midmarket); }
.tier-card.enterprise .tier-box { border-left-color: var(--t-enterprise); }
.tier-box strong { display: block;  font-size: 10px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); margin-bottom: 5px; font-weight: 700; }
.tier-box span { font-size: 13px; color: var(--ink); line-height: 1.5; }
@media (max-width: 900px) { .tiers-grid { grid-template-columns: 1fr; } }

.tiers-help {
  background: var(--sapphire-50);
  border-left: 4px solid var(--sapphire);
  border-radius: 8px;
  padding: 22px;
  margin-top: 32px;
  font-size: 15px;
  color: var(--slate);
  line-height: 1.65;
}
.tiers-help strong { color: var(--ink); }
.tiers-help a { color: var(--sapphire-dark); font-weight: 600; text-decoration: underline; }