body {
    margin: 0;
    font-family: Inter, Arial, sans-serif;
    background: #f5f7fb;
    color: #2b2b2b;
}

h3 {
font-size: 20px;
}

/* HEADER */

header {
    background: #121935;
    color: #fff;
    padding: 20px 20px;
}

.header-inner {
    max-width: 1100px;
    margin: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.logo img {
    height: 85px;
    width: auto;
    display: block;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.phone {
    font-weight: 800;
    color: #fff;
    text-decoration: none;
    font-size: 22px;
    margin: 0 25px;
}

.messengers {
    display: flex;
    gap: 8px;
}

.telegram, .viber, .whatsapp {
    padding: 8px 12px;
    color: #ffffff;
    border-radius: 20px;
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
}

.telegram { background: hsl(204, 85%, 50%); }
.viber { background: #8703f3; }
.whatsapp { background: hsl(120, 89%, 43%); }

.instagram {
    padding: 8px 12px;
    background: linear-gradient(135deg, #f09433, #e6683c);
    color: #ffffff;
    border-radius: 20px;
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
}

/* HERO */

.hero-section {
    margin-top: 40px;
    background: #0e1630;
    color: #fff;
    padding: 100px 20px;
}
.hero-speakers{
background:
linear-gradient(rgba(14,22,48,0.75), rgba(14,22,48,0.75)),
url("img/hand-speaker.jpg");
background-size:cover;
background-position:center;
}

.hero-robots{
background:
linear-gradient(rgba(14,22,48,0.75), rgba(14,22,48,0.75)),
url("img/vacuum-cleaner-tackling-heavily-soiled-floor.jpg");
background-size:cover;
background-position:center;
}
.hero-inner {
    max-width: 1100px;
    margin: auto;
    text-align: center;
}

.hero-inner h1 {
    margin: 0;
    font-size: 38px;
}

.hero-sub {
    margin-top: 12px;
    font-size: 18px;
    opacity: .9;
}

.hero-btn {
    display: inline-block;
    margin-top: 22px;
    padding: 16px 40px;
    border-radius: 50px;
    background: linear-gradient(135deg, #f2b64a, #f5c15c);
    color: #0e1630;
    font-weight: 700;
    text-decoration: none;
}

/* CTA */

.cta-btn {
    background: linear-gradient(135deg, #f2b64a, #f5c15c);
    color: #0e1630;
    padding: 18px 40px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
}

/* TOAST */

.toast-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.55);
    opacity: 0;
    pointer-events: none;
    transition: opacity .25s ease;
    z-index: 9998;
}

.toast {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(.9);
    background: #0e1630;
    color: #fff;
    padding: 24px 26px;
    border-radius: 18px;
    box-shadow: 0 25px 70px rgba(0,0,0,.5);
    font-weight: 700;
    opacity: 0;
    pointer-events: none;
    transition: opacity .25s ease, transform .25s ease;
    z-index: 9999;
    max-width: 90%;
    text-align: center;
}

.toast.show {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
    pointer-events: auto;
}

.toast-backdrop.show {
    opacity: 1;
    pointer-events: auto;
}

.toast-text {
    font-size: 20px;
    line-height: 1.4;
    padding-top: 10px;
}

.toast-close {
    position: absolute;
    top: 12px;
    right: 12px;
    background: transparent;
    border: none;
    color: #fff;
    font-size: 22px;
    cursor: pointer;
}

/* SECTIONS */

section {
    max-width: 1100px;
    margin: auto;
    padding: 70px 20px;
}

h2 {
    text-align: center;
    color: #0e1630;
}

h2::after {
    content: "";
    display: block;
    width: 60px;
    height: 4px;
    background: #f2b64a;
    margin: 12px auto 0;
}

.subtitle {
    text-align: center;
    font-size: 16px;
    color: #555;
    margin: 10px auto 40px;
    max-width: 520px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 30px;
}

.card {
    background: #fff;
    padding: 30px;
    border-radius: 22px;
    text-align: center;
    border-top: 5px solid #f2b64a;
    box-shadow: 0 18px 40px rgba(0,0,0,.08);
}

.cards {
    padding-left: 50px;
}

.advantages {
    background: #fff;
}

.adv {
    background: #0e1630;
    color: #fff;
    padding: 25px;
    border-radius: 18px;
    text-align: center;
    font-weight: 600;
}

/* FORM */

.form-section {
    background: linear-gradient(180deg,#fff,#f2f4f9);
}

form {
    max-width: 440px;
    margin: auto;
    background: #fff;
    padding: 40px;
    border-radius: 24px;
    box-shadow: 0 25px 55px rgba(0,0,0,.12);
}

label {
    font-size: 13px;
    font-weight: 600;
}

input, select, textarea {
    width: 100%;
    margin: 10px 0 22px;
    padding: 14px;
    border-radius: 10px;
    border: 1px solid #d0d5dd;
}

button.big-btn {
    width: 100%;
    padding: 18px;
    background: linear-gradient(135deg,#f2b64a,#f5c15c);
    color: #0e1630;
    font-weight: 700;
    border: none;
    border-radius: 40px;
}

.contacts {
    text-align: center;
}

footer {
    background: #0e1630;
    color: #bdbdbd;
    text-align: center;
    padding: 25px;
}

/* MENU */

.menu {
  display:flex;
  gap:14px;
  align-items:center;
  justify-content:center;
  flex-wrap:wrap;
}

.menu-link {
  color:#fff;
  text-decoration:none;
  font-weight:600;
  padding:10px 14px;
  border-radius:10px;
}

.menu-link:hover {
  background:rgba(255,255,255,0.12);
}

.menu-link.active {
  background:#fff;
  color:#0e1630;
}

/* BURGER */

.burger {
  display:none;
  background:transparent;
  border:none;
  color:#fff;
  font-size:28px;
  cursor:pointer;
}

/* MOBILE */

@media (max-width:900px){

.burger{
display:block;
}

.menu{
display:none;
}

.menu.show{
display:flex;
flex-direction:column;
position:absolute;
top:70px;
left:0;
right:0;
background:#0e1630;
padding:20px;
gap:10px;
}

.header-right{
position:fixed;
top:70px;
right:0;
width:100%;
max-width:400px;
height:calc(100vh - 70px);
background:#121935;
flex-direction:column;
align-items:flex-start;
padding:20px;
gap:12px;
transform:translateX(100%);
transition:.25s;
}

.header-right.show{
transform:translateX(0);
}

.phone{
font-size:18px;
margin:0;
}

}

@media (max-width:600px){

.hero-inner h1{
font-size:26px;
}

.hero-sub{
font-size:16px;
}

form{
padding:25px;
}

.logo img{
height:40px;
}

}
/* BURGER */
.burger {
    display: none;
    background: transparent;
    border: none;
    color: #fff;
    font-size: 28px;
    cursor: pointer;
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10001;
}

/* MOBILE */
@media (max-width: 900px) {
    .burger {
        display: block;
    }

    .menu {
        display: none;
        flex-direction: column;
        position: fixed;
        top: 70px;
        right: 0;
        width: 250px;
        background: #0e1630;
        padding: 20px;
        gap: 10px;
        border-left: 1px solid rgba(255,255,255,0.1);
        z-index: 9999;
        transform: translateX(100%);
        transition: transform 0.25s ease;
        height: calc(100vh - 70px);
        overflow-y: auto;
    }

    .menu.show {
        transform: translateX(0);
    }

    .menu-link {
        display: block;
        padding: 12px 15px;
    }
    .mobile-menu{
    display:none;
    position:fixed;
    top:0;
    right:0;
    width:80%;
    max-width:400px;
    height:100vh;
    background:#121935;
    padding:20px;
    gap:15px;
    flex-direction:column;
    overflow-y:auto;
    z-index:9999;
    transition:transform .25s ease;
    transform:translateX(100%);
    color:#fff;
}

.mobile-menu.show{
    display:flex;
    transform:translateX(0);
}

.mobile-menu .menu-link,
.mobile-menu .phone,
.mobile-menu .messengers a,
.mobile-menu .cta-btn{
    display:block;
    margin-bottom:15px;
}
}