* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    min-height: 100%;
    font-family: Arial, Helvetica, sans-serif;
    background: #eef7ff;
    color: #102033;
}

body {
    overflow-x: hidden;
}

a {
    color: inherit;
}

main {
    min-height: calc(100vh - 120px);
}

.sv-page {
    min-height: calc(100vh - 120px);
    display: grid;
    grid-template-columns: 38% 62%;
    background:
        radial-gradient(circle at 15% 75%, rgba(20, 116, 215, 0.22), transparent 28%),
        linear-gradient(135deg, #eaf6ff 0%, #f8fcff 48%, #ffffff 100%);
}

.sv-left {
    position: relative;
    padding: 70px 60px 40px;
    overflow: hidden;
    background:
        radial-gradient(circle at 30% 76%, rgba(16, 111, 211, 0.35), transparent 20%),
        linear-gradient(180deg, rgba(232, 246, 255, 0.7), rgba(172, 218, 255, 0.35));
}

.sv-logo {
    width: 310px;
    max-width: 90%;
    display: block;
}

.sv-hero {
    margin-top: 150px;
    position: relative;
    z-index: 2;
}

.sv-hero h1 {
    margin: 0;
    font-size: clamp(54px, 5vw, 82px);
    line-height: 0.98;
    font-weight: 800;
    letter-spacing: -2px;
}

.sv-hero h1 span {
    color: #126fd3;
    letter-spacing: 4px;
}

.sv-line {
    width: 75px;
    height: 4px;
    background: #126fd3;
    margin: 34px 0 26px;
    border-radius: 10px;
}

.sv-hero p {
    margin: 0;
    font-size: 20px;
    line-height: 1.75;
    color: #344761;
}

.sv-visual {
    position: absolute;
    left: 60px;
    bottom: 55px;
    width: 330px;
    height: 190px;
    border-radius: 45px;
    background:
        radial-gradient(circle at 50% 55%, rgba(255,255,255,0.9), transparent 28%),
        radial-gradient(circle at 45% 45%, rgba(18, 111, 211, 0.85), rgba(18, 111, 211, 0.2) 42%, transparent 65%);
    opacity: 0.75;
}

.sv-cloud {
    position: absolute;
    left: 70px;
    top: 25px;
    color: #126fd3;
    font-size: 90px;
    filter: drop-shadow(0 18px 24px rgba(18, 111, 211, 0.25));
}

.sv-camera {
    position: absolute;
    left: 170px;
    top: 92px;
    color: white;
    background: #126fd3;
    border: 8px solid white;
    width: 92px;
    height: 58px;
    border-radius: 18px;
    display: grid;
    place-items: center;
    font-size: 28px;
    box-shadow: 0 18px 40px rgba(18, 111, 211, 0.35);
}

.sv-right {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 60px 80px;
}

.sv-card {
    width: min(760px, 100%);
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid rgba(210, 230, 250, 0.9);
    border-radius: 30px;
    padding: 62px 56px 52px;
    box-shadow: 0 28px 85px rgba(42, 96, 150, 0.16);
    text-align: center;
}

.sv-cloud-icon {
    font-size: 68px;
    line-height: 1;
    color: #126fd3;
    margin-bottom: 26px;
}

.sv-card h2 {
    margin: 0 0 12px;
    font-size: 30px;
    font-weight: 500;
    color: #4d5c72;
}

.sv-card h3 {
    margin: 0;
    font-size: 52px;
    line-height: 1.1;
    letter-spacing: -1px;
}

.sv-card h3 span {
    color: #126fd3;
}

.sv-divider {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 28px;
    align-items: center;
    margin: 42px 0 34px;
}

.sv-divider span {
    height: 1px;
    background: #d5dde8;
}

.sv-divider p {
    margin: 0;
    color: #4d5c72;
    font-size: 22px;
}

.sv-option {
    display: grid;
    grid-template-columns: 96px 1fr 32px;
    gap: 28px;
    align-items: center;
    text-align: left;
    text-decoration: none;
    padding: 26px 30px;
    margin-bottom: 28px;
    border: 2px solid #b7d8ff;
    border-radius: 20px;
    background: linear-gradient(180deg, #ffffff, #fbfdff);
    box-shadow: 0 10px 26px rgba(18, 111, 211, 0.08);
}

.sv-option-device {
    border-color: #55cfb4;
}

.sv-option-icon {
    width: 96px;
    height: 96px;
    border-radius: 22px;
    display: grid;
    place-items: center;
    background: #eef6ff;
    color: #126fd3;
    font-size: 42px;
}

.sv-option-device .sv-option-icon {
    background: #ecfbf6;
    color: #12a987;
}

.sv-option-text strong {
    font-size: 28px;
    color: #0f1c30;
}

.sv-option-text p {
    margin: 10px 0 0;
    font-size: 19px;
    line-height: 1.45;
    color: #3f4e66;
}

.sv-arrow {
    font-size: 60px;
    color: #126fd3;
    line-height: 1;
}

.sv-option-device .sv-arrow {
    color: #12a987;
}

.sv-security {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
    margin-top: 38px;
    text-align: left;
    color: #526176;
    font-size: 14px;
}

.sv-security b {
    color: #126fd3;
}

.sv-footer {
    height: 120px;
    background:
        radial-gradient(circle at 80% 10%, rgba(255,255,255,0.16), transparent 25%),
        linear-gradient(135deg, #0648a6, #0876dd);
    color: white;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 15px;
}

.sv-footer img {
    width: 210px;
    filter: brightness(0) invert(1);
}

@media (max-width: 1100px) {
    .sv-page {
        grid-template-columns: 1fr;
    }

    .sv-left {
        min-height: 420px;
    }

    .sv-hero {
        margin-top: 90px;
    }

    .sv-visual {
        display: none;
    }

    .sv-security {
        grid-template-columns: 1fr;
        text-align: center;
    }
	
	.device-login-page {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 40px;
    background:
        radial-gradient(circle at 20% 20%, rgba(18, 111, 211, 0.18), transparent 28%),
        linear-gradient(135deg, #eaf6ff, #ffffff);
}

.device-login-card {
    width: min(520px, 100%);
    background: white;
    border-radius: 28px;
    padding: 42px;
    box-shadow: 0 28px 85px rgba(42, 96, 150, 0.18);
}

.back-link {
    display: inline-block;
    margin-bottom: 28px;
    text-decoration: none;
    color: #126fd3;
    font-weight: 700;
}

.device-logo {
    width: 260px;
    max-width: 100%;
    display: block;
    margin-bottom: 34px;
}

.device-login-card h1 {
    margin: 0;
    font-size: 38px;
    color: #102033;
}

.intro {
    margin: 10px 0 32px;
    color: #526176;
    font-size: 18px;
}

.device-login-card label {
    display: block;
    margin: 18px 0 8px;
    font-weight: 700;
    color: #344761;
}

.device-login-card input {
    width: 100%;
    height: 52px;
    border: 1px solid #cbd9ea;
    border-radius: 12px;
    padding: 0 16px;
    font-size: 17px;
}

.device-login-card input:focus {
    outline: none;
    border-color: #126fd3;
    box-shadow: 0 0 0 4px rgba(18, 111, 211, 0.12);
}

.device-login-card button {
    width: 100%;
    height: 56px;
    margin-top: 30px;
    border: none;
    border-radius: 14px;
    background: #126fd3;
    color: white;
    font-size: 18px;
    font-weight: 800;
    cursor: pointer;
}

.device-login-card button:hover {
    background: #0d5fb7;
}
}