* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            user-select: none;
        }

        :root {
            --primary: #00D4FF;
            --secondary: #0066FF;
            --dark: #1a1a2e;
            --light: #f8f9fa;
            --accent: #7B68EE;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            overflow-x: hidden;
        }

        header {
            background: linear-gradient(135deg, var(--dark) 0%, #16213e 100%);
            color: white;
            padding: 1.5rem 5%;
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 20px rgba(0,0,0,0.1);
        }

        nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1400px;
            margin: 0 auto;
        }

        .logo {
            font-size: 1.8rem;
            font-weight: bold;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .nav-links {
            display: flex;
            gap: 2rem;
            list-style: none;
        }

        .nav-links a {
            color: white;
            text-decoration: none;
            transition: color 0.3s;
            font-weight: 500;
        }

        .nav-links a:hover {
            color: var(--primary);
        }

        .cta-button {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            padding: 0.8rem 2rem;
            border-radius: 50px;
            text-decoration: none;
            font-weight: bold;
            transition: transform 0.3s, box-shadow 0.3s;
            box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
        }

        .cta-button:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 25px rgba(0, 212, 255, 0.5);
        }

        .hero {
            background: linear-gradient(135deg, var(--dark) 0%, #16213e 50%, #0f3460 100%);
            color: white;
            padding: 150px 5% 100px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
            top: -200px;
            right: -200px;
            animation: pulse 4s ease-in-out infinite;
        }

        @keyframes pulse {
            0%, 100% { transform: scale(1); opacity: 0.5; }
            50% { transform: scale(1.2); opacity: 0.8; }
        }

        .hero-content {
            max-width: 1200px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }

        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: 1rem;
            background: linear-gradient(135deg, white, var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            animation: fadeInUp 1s ease-out;
        }

        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(30px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .hero p {
            font-size: 1.3rem;
            margin-bottom: 2rem;
            opacity: 0.9;
            animation: fadeInUp 1s ease-out 0.2s backwards;
        }

        .hero-buttons {
            display: flex;
            gap: 1rem;
            justify-content: center;
            animation: fadeInUp 1s ease-out 0.4s backwards;
        }

        .device-mockup {
            width: 100%;
            max-width: 600px;
            margin: 3rem auto 0;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 20px;
            padding: 2rem;
            backdrop-filter: blur(10px);
            border: 2px solid rgba(255, 255, 255, 0.2);
            font-size: 4rem;
            animation: float 3s ease-in-out infinite;
        }

        @keyframes float {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-20px); }
        }

        section {
            padding: 80px 5%;
            max-width: 1400px;
            margin: 0 auto;
        }

        .section-title {
            text-align: center;
            font-size: 2.5rem;
            margin-bottom: 1rem;
            color: var(--dark);
        }

        .section-subtitle {
            text-align: center;
            color: #666;
            margin-bottom: 3rem;
            font-size: 1.1rem;
        }

        .about-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }

        .mission-vision {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            margin-top: 2rem;
        }

        .card {
            background: white;
            padding: 2rem;
            border-radius: 15px;
            box-shadow: 0 5px 30px rgba(0, 0, 0, 0.1);
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 10px 40px rgba(0, 212, 255, 0.2);
        }

        .card h3 {
            color: var(--secondary);
            margin-bottom: 1rem;
            font-size: 1.5rem;
        }

        .how-it-works {
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
        }

        .steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            margin-top: 3rem;
        }

        .step {
            text-align: center;
            padding: 2rem;
            background: white;
            border-radius: 15px;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
            transition: transform 0.3s;
        }

        .step:hover {
            transform: scale(1.05);
        }

        .step-icon {
            font-size: 3rem;
            margin-bottom: 1rem;
        }

        .step h3 {
            color: var(--secondary);
            margin-bottom: 0.5rem;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
            margin-top: 3rem;
        }

        .feature {
            background: white;
            padding: 2rem;
            border-radius: 15px;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
            border-left: 4px solid var(--primary);
            transition: transform 0.3s;
        }

        .feature:hover {
            transform: translateX(10px);
        }

        .pricing {
            background: linear-gradient(135deg, var(--dark) 0%, #16213e 100%);
            color: white;
        }

        .pricing-table {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
            margin-top: 3rem;
        }

        .pricing-card {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            padding: 2rem;
            border-radius: 15px;
            border: 2px solid rgba(255, 255, 255, 0.2);
            text-align: center;
            transition: transform 0.3s;
        }

        .pricing-card:hover {
            transform: scale(1.05);
            border-color: var(--primary);
        }

        .pricing-card.featured {
            background: linear-gradient(135deg, var(--secondary), var(--accent));
            transform: scale(1.05);
        }

        .price {
            font-size: 3rem;
            font-weight: bold;
            margin: 1rem 0;
            background: linear-gradient(135deg, var(--primary), white);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .features-list {
            list-style: none;
            margin: 2rem 0;
        }

        .features-list li {
            padding: 0.5rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .dentist-section {
            background: linear-gradient(135deg, var(--accent) 0%, var(--secondary) 100%);
            color: white;
            text-align: center;
        }

        .contact {
            text-align: center;
        }

        .contact-info {
            display: flex;
            justify-content: center;
            gap: 3rem;
            margin: 2rem 0;
            flex-wrap: wrap;
        }

        .contact-item {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.1rem;
        }

        .social-links {
            display: flex;
            justify-content: center;
            gap: 1.5rem;
            margin-top: 2rem;
        }

        .social-links a {
            width: 50px;
            height: 50px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            text-decoration: none;
            font-size: 1.5rem;
            transition: transform 0.3s;
        }

        .social-links a:hover {
            transform: scale(1.2) rotate(360deg);
        }

        footer {
            background: var(--dark);
            color: white;
            text-align: center;
            padding: 2rem 5%;
        }

        .footer-links {
            margin-top: 1rem;
        }

        .footer-links a {
            color: var(--primary);
            text-decoration: none;
            margin: 0 1rem;
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }

            .hero h1 {
                font-size: 2rem;
            }

            .about-content,
            .steps,
            .features-grid,
            .pricing-table {
                grid-template-columns: 1fr;
            }

            .mission-vision {
                grid-template-columns: 1fr;
            }
        }

/* ========================
   Revamp: DentalAI banner theme
   Light UI with blue + green accents
   ======================== */
:root {
  --primary: #0066FF;      /* deep blue */
  --secondary: #2DB4FF;    /* bright sky */
  --accent: #79D70F;       /* green from CARE text */
  --yellow: #FDBA21;       /* yellow ring */
  --dark: #0F172A;         /* dark for footer */
  --light: #F5F9FF;        /* light background */
}

body { background: #FFFFFF; color: #1F2937; }

header {
  background: #FFFFFF;
  color: #1F2937;
  box-shadow: 0 6px 20px rgba(0, 102, 255, 0.08);
}

.logo {
  background: none;
  -webkit-background-clip: initial;
  -webkit-text-fill-color: initial;
  color: var(--primary);
}

.nav-links a { color: #334155; }
.nav-links a:hover { color: var(--primary); }

.cta-button {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  box-shadow: 0 8px 26px rgba(0, 102, 255, 0.25);
}

.hero {
  background: linear-gradient(180deg, #ffffff 0%, var(--light) 100%);
  color: #0F172A;
  text-align: left;
  padding: 150px 5% 80px;
}

/* decorative shapes inspired by banner */
.hero::before {
  content: '';
  position: absolute;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, rgba(0,102,255,0.12) 0%, transparent 60%);
  top: 30px;
  right: calc(5% + 60px);
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -1px; left: -10%;
  width: 120%; height: 160px;
  background: linear-gradient(45deg, #22c55e33, #3b82f633);
  clip-path: ellipse(75% 100% at 50% 0);
}

/* override old gradient heading */
.hero h1 { background: none; -webkit-text-fill-color: initial; color: #0F172A; }

/* new hero layout */
.hero-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; align-items: center; gap: 3rem; }
.hero-text h1 { font-size: 3.2rem; line-height: 1.15; letter-spacing: -0.5px; }
.hero-text h1 .accent-blue { color: var(--primary); }
.hero-text h1 .accent-green { color: var(--accent); }
.hero p { font-size: 1.25rem; color: #475569; }
.hero-buttons { justify-content: flex-start; }

.hero-visual { position: relative; display: flex; justify-content: center; }
.photo-ring { width: 360px; height: 360px; border-radius: 50%; border: 10px solid var(--yellow); overflow: hidden; box-shadow: 0 25px 55px rgba(0, 102, 255, 0.25); }
.photo-ring img { width: 100%; height: 100%; object-fit: cover; }
.dot-grid { position: absolute; bottom: -20px; right: -10px; width: 120px; height: 120px; background-image: radial-gradient(var(--primary) 2px, transparent 2px); background-size: 16px 16px; opacity: 0.8; border-radius: 12px; }

.section-title { color: #0F172A; }
.section-subtitle { color: #61728f; }

.how-it-works { background: #FFFFFF; }
.step { border: 1px solid #e5e7eb; }
.feature { border-left-color: var(--primary); }

.pricing { background: linear-gradient(180deg, #ffffff 0%, var(--light) 100%); color: #0F172A; }
.pricing-card { background: #ffffff; border-color: #e5e7eb; }
.pricing-card.featured { background: linear-gradient(135deg, var(--primary), var(--secondary)); color: #ffffff; }
.price { background: none; -webkit-text-fill-color: initial; color: var(--primary); }

.dentist-section { background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%); }
footer { background: #0F172A; }

@media (max-width: 992px) {
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero-buttons { justify-content: center; }
  .hero-visual { margin-top: 2rem; }
}