:root {
    --cyan: #0cc8f3;
    --cyan-dark: #089bd7;
    --cyan-light: #4ddcff;
    --bg: #ffffff;
    --ink: #1f2937;
    --muted: #6b7280;
    --gradient: linear-gradient(180deg, var(--cyan) 0%, var(--cyan-dark) 100%);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg);
    color: var(--ink);
    min-height: 100vh;
    overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }

/* TOPBAR */
.topbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #e9eef3;
}
.topbar-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
}
.logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
}
.logo-icon {
    width: 36px; height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.logo-icon svg { width: 100%; height: 100%; }
.logo-text {
    font-size: 1.15rem;
    font-weight: 800;
    color: #111827;
    letter-spacing: -0.02em;
}

/* HERO */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: 100px 24px 60px;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    width: 100%;
}
.hero-content {
    position: relative;
    z-index: 2;
    max-width: 600px;
}
.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    line-height: 1.1;
    color: var(--ink);
    margin-bottom: 24px;
    letter-spacing: -0.03em;
}
.hero-title .highlight {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-desc {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: var(--muted);
    line-height: 1.7;
    margin-bottom: 40px;
    max-width: 480px;
}

/* START BUTTON - Left aligned */
.start-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 18px 36px;
    border-radius: 16px;
    background: var(--gradient);
    color: #ffffff;
    font-size: 1.1rem;
    font-weight: 700;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 8px 30px rgba(12, 200, 243, 0.35);
    position: relative;
    overflow: hidden;
}
.start-btn::before {
    content: '';
    position: absolute;
    top: 0; left: -100%;
    width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}
.start-btn:hover::before { left: 100%; }
.start-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(12, 200, 243, 0.45);
}
.start-btn:active { transform: translateY(-1px); }
.start-btn svg {
    width: 20px; height: 20px;
    transition: transform 0.3s ease;
}
.start-btn:hover svg { transform: translateY(3px); }

/* DECORATIVE CIRCLES */
.deco-circle {
    position: absolute;
    border-radius: 50%;
    opacity: 0.08;
    background: var(--gradient);
    pointer-events: none;
}
.deco-1 { width: 400px; height: 400px; top: 10%; right: -100px; }
.deco-2 { width: 250px; height: 250px; bottom: 20%; right: 10%; opacity: 0.06; }
.deco-3 { width: 150px; height: 150px; top: 50%; right: 25%; opacity: 0.1; }

/* FEATURES */
.features {
    padding: 60px 24px 80px;
    background: linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
}
.features-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.feature-card {
    padding: 32px 24px;
    background: #ffffff;
    border-radius: 20px;
    border: 1px solid #e9eef3;
    text-align: center;
    transition: all 0.3s ease;
}
.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.08);
    border-color: var(--cyan-light);
}
.feature-icon {
    width: 56px; height: 56px;
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 16px;
    background: linear-gradient(135deg, #eef8ff 0%, #e0f2fe 100%);
    color: var(--cyan-dark);
}
.feature-icon svg { width: 28px; height: 28px; }
.feature-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 8px;
}
.feature-card p {
    font-size: 0.9rem;
    color: var(--muted);
    line-height: 1.5;
}

/* FOOTER */
.footer {
    padding: 24px;
    text-align: center;
    border-top: 1px solid #e9eef3;
}
.footer p { font-size: 0.85rem; color: var(--muted); }

/* RESPONSIVE */
@media (max-width: 768px) {
    .hero { padding: 100px 20px 40px; }
    .hero-title { font-size: 2.2rem; }
    .start-btn { padding: 16px 28px; font-size: 1rem; }
    .features-inner { grid-template-columns: 1fr; }
    .deco-1, .deco-2, .deco-3 { display: none; }
}